As Filed with the Securities and Exchange Commission on June 12, 1996 

                                               Registration No. 333-         

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                   ___________________________________________

                                    FORM S-8
                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933
                   ___________________________________________

                             A. O. SMITH CORPORATION
             (Exact Name of Registrant as Specified in its Charter)

            Delaware                                           39-0619790 
   (State or Other Jurisdiction of Incorporation          (I.R.S. Employer
   Identification No.)                                     or Organization)

                             A. O. Smith Corporation
                     11270 West Park Place (Zip Code) 53224 
                   Post Office Box 23973 (Zip Code) 53223-0973
                              Milwaukee, Wisconsin
                    (Address of Principal Executive Offices)
       __________________________________________________________________

                   A. O. SMITH PROFIT SHARING RETIREMENT PLAN,
                        As Amended Effective July 1, 1996
                              (Full Title of Plan)
       ___________________________________________________________________

                                W. David Romoser
                  Vice President, General Counsel and Secretary
                             A. O. Smith Corporation
                              Post Office Box 23973
                            Milwaukee, WI 53223-0973

                     (Name and Address of Agent for Service)
                      Telephone Number Including Area Code
                      of Agent for Service: (414) 359-4137

                         CALCULATION OF REGISTRATION FEE

                                     Proposed       Proposed
                          Amount      maximum       maximum
         Title of          to be     offering      aggregate      Amount of
        securities      registered   price per      offering     registratio
     to be registered      (1)       share (2)     price (2)      n fee (2)

    Common Stock, $1     100,000
    par value             shares     $26.9375    $2,693,750.00     $930.00


   (1)Pursuant to Rule 416(c) under the Securities Act of 1933, this
   Registration Statement covers an indeterminate amount of interests to be
   offered or sold pursuant to the employee benefit plan described herein.

   (2)Estimated solely for the purposes of computing the registration fee
   pursuant to Rule 457(c) under the Securities Act of 1933, on the basis of
   the average of the high and low sales price of A. O. Smith Corporation
   Common Stock in New York Stock Exchange composite transactions on June 10,
   1996.

   

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

   Item 3.  Incorporation of Documents by Reference

        The following documents filed by A. O. Smith Corporation (the
   "Company") and the A. O. Smith Profit Sharing Retirement Plan (the "Plan")
   with the Securities and Exchange Commission are hereby incorporated herein
   by reference:

        (a)  The Company's Annual Report on Form 10-K for the fiscal year
        ended December 31, 1995, which contains audited financial statements
        for the Registrant's latest fiscal year.

        (b)  All other reports filed by the Company with the Securities and
        Exchange Commission pursuant to Section 13(a) or 15(d) of the
        Securities Exchange Act of 1934, as amended, since December 31, 1995.

        (c)  The description of the Company's Common Stock included in Item 4
        of the Company's Form 8-A, filed December 9, 1994, for the
        registration of the Common Stock with the Securities and Exchange
        Commission, including any amendments or reports filed for the purpose
        of updating such description.

        All documents subsequently filed by the Company or the Plan pursuant
   to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of
   1934, prior to the filing of a post-effective amendment to this
   registration statement which indicates that all securities offered have
   been sold or which deregisters all securities then remaining unsold, shall
   be deemed to be incorporated by reference in this Registration Statement
   and to be a part hereof from the date of filing of such documents.

   Item 4.  Description of Securities

        Not Applicable.

   Item 5.  Interests of Named Experts and Counsel

        Not Applicable.

   Item 6.  Indemnification of Directors and Officers

        Under the provisions of Section 145 of the Delaware General
   Corporation Law, the Company is required to indemnify any officer or
   director against expenses arising out of legal proceedings in which the
   director or officer becomes involved by reason of being a director or
   officer if the director or officer is successful in the defense of such
   proceedings.  Section 145 also provides that the Company may indemnify a
   director or officer in connection with a proceeding in which he or she is
   not successful in defending if it is determined that he or she acted in
   good faith and in a manner reasonably believed to be in or not opposed to
   the best interests of the Company or, in the case of a criminal action, if
   it is determined that he or she had no reasonable cause to believe his or
   her conduct was unlawful.  Liabilities for which a director or officer may
   be indemnified include amounts paid in satisfaction of settlements,
   judgments, fines and other expenses (including attorneys' fees incurred in
   connection with such proceedings).  In a stockholder derivative action, no
   indemnification may be paid in respect of any claim, issue or matter as to
   which the director or officer has been adjudged to be liable to the
   Company (except for expenses allowed by a court).

        Under the provisions of Article VII of the Company's By-Laws and
   individual indemnity agreements between the Company and its directors and
   certain of its officers, the Company is required to indemnify officers or
   directors to a greater extent than under the current provisions of Section
   145 of the Delaware General Corporation Law.  Except with respect to
   stockholder derivative actions, the agreements and the By-Law provisions
   generally state that the director or officer will be indemnified against
   expenses, amounts paid in settlement and judgments, fines, penalties
   and/or other amounts incurred with respect to any threatened, pending or
   completed proceeding (including, without limitation, proceedings brought
   under and/or predicated upon the Securities Act of 1933 and/or the
   Securities Exchange Act of 1934); provided that (i) such individual did
   not engage in criminal, fraudulent or intentional misconduct in the
   performance of his or her duties to the Company; (ii) with respect to
   criminal actions, such individual had no reasonable cause to believe his
   or her conduct was unlawful; and (iii) with respect to securities law
   actions, such individual acted in good faith and in a manner he or she
   reasonably believed to be in or not opposed to the best interests of the
   Company and its stockholders.

        The foregoing standards also apply with respect to the
   indemnification of expenses incurred in a stockholder derivative suit. 
   However, in order for a director or officer to be indemnified for
   settlement amounts or judgments incurred in a derivative suit, it also
   must be determined that (i) such individual has not breached his or her
   duty of loyalty to the Company or its stockholders; (ii) has not committed
   acts or omissions in bad faith or which involve intentional misconduct or
   a knowing violation of the law; (iii) has not engaged in any willful or
   negligent conduct in paying dividends or repurchasing stock of the Company
   out of other than lawfully available funds; and (iv) has not derived an
   improper personal benefit from the subject transaction.

        In addition, with respect to the indemnification of settlement
   amounts in any type of action, such settlement must be determined to be in
   the best interests of the Company and its stockholders and not to be
   materially unreasonable in amount.

        In addition, the Company maintains insurance policies which provide
   coverage to its directors and officers against certain liabilities.

   Item 7.  Exemption From Registration Claimed

        Not Applicable.


   Item 8.  Exhibits

        The exhibits filed herewith or incorporated by reference are set
   forth in the attached Exhibit Index.

   Item 9.  Undertakings

   A.   The undersigned registrant hereby undertakes:

   (1)  To file, during any period in which offers or sales are being made, a
   post-effective amendment to this Registration Statement:

        (i)  To include any prospectus required by Section 10(a)(3) of the
        Securities Act of 1933;

        (ii) To reflect in the prospectus any facts or events arising after
        the effective date of the Registration Statement (or the most recent
        post-effective amendment thereof) which, individually or in the
        aggregate, represent a fundamental change in the information set
        forth in the Registration Statement;

        (iii)     To include any material information with respect to the
        plan of distribution not previously disclosed in the Registration
        Statement or any material change to such information in the
        Registration Statement.

   Provided, however, that paragraphs A.(1)(i) and A.(1)(ii) do not apply if
   the information required to be included in a post-effective amendment by
   those paragraphs is contained in periodic reports filed by the Company
   pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of
   1934 that are incorporated by reference in the Registration Statement.

   (2)  That, for the purpose of determining any liability under the
   Securities Act of 1933, each such post-effective amendment shall be deemed
   to be a new registration statement relating to the securities offered
   therein, and the offering of such securities at that time shall be deemed
   to be the initial bona fide offering thereof.

   (3)  To remove from registration by means of a post-effective amendment
   any of the securities being registered which remain unsold at the
   termination of the offering.

   B.   The undersigned registrant hereby undertakes that, for purposes of
   determining any liability under the Securities Act of 1933, each filing of
   the registrant's annual report pursuant to Section 13(a) or Section 15(d)
   of the Securities Exchange Act of 1934 and each filing of the Plan's annual
   report pursuant to Section 15(d) of the Securities Exchange Act of 1934
   that is incorporated by reference in the Registration Statement shall be
   deemed to be a new registration statement relating to the securities
   offered therein, and the offering of such securities at that time shall be
   deemed to be the initial bona fide offering thereof.

   C.   Insofar as indemnification for liabilities arising under the
   Securities Act of 1933 may be permitted to directors, officers and
   controlling persons of the registrant pursuant to the foregoing
   provisions, or otherwise, the registrant has been advised that in the
   opinion of the Securities and Exchange Commission such indemnification is
   against public policy as expressed in the Act and is, therefore,
   unenforceable.  In the event that a claim for indemnification against such
   liabilities (other than the payment by the registrant of expenses incurred
   or paid by a director, officer or controlling person of the registrant in
   the successful defense of any action, suit or proceeding and other than
   payments under the insurance policies referred to in Item 6) is asserted
   by such director, officer or controlling person in connection with the
   securities being registered, the registrant will, unless in the opinion of
   its counsel the matter has been settled by controlling precedent, submit
   to a court of appropriate jurisdiction, the question whether such
   indemnification by it is against public policy as expressed in the
   Securities Act and will be governed by the final adjudication of such
   issue.

   D.   The undersigned registrant hereby undertakes that this Plan, and any
   amendment thereto, will be submitted in a timely manner to the Internal
   Revenue Service ("IRS") and will make all changes required by the IRS in
   order to qualify the Plan.


   
                               SIGNATURES

        The Registrant.  Pursuant to the requirements of the Securities Act
   of 1933, the Registrant certifies that it has reasonable grounds to
   believe that it meets all of the requirements for filing on Form S-8 and
   has duly caused this Registration Statement to be signed on its behalf by
   the undersigned, thereunto duly authorized, in the City of Milwaukee,
   State of Wisconsin, on this 11th day of June, 1996.

                                 A. O. SMITH CORPORATION


                                                                      
                                 By:/s/Robert J. O'Toole        
                                    Robert J. O'Toole, Chairman,
                                    President and Chief Executive Officer


                           POWER OF ATTORNEY

        We, the undersigned officers and directors of A. O. Smith
   Corporation, hereby severally constitute and appoint Robert J. O'Toole,
   Glen R. Bomberger, John J. Kita, W. David Romoser and Jolene L. Shellman,
   and each of them, agent and attorney-in-fact, with full power of
   substitution and resubstitution, for them and in their names, place and
   stead, in any and all capacities, to sign any and all amendments
   (including post-effective amendments) to this registration statement, and
   to file the same, with all exhibits thereto and other documents in
   connection therewith, with the Securities and Exchange Commission,
   granting unto said attorneys-in-fact and agents, and each of them, full
   power and authority to do and perform each and every act and thing
   requisite and necessary to be done in connection therewith, as fully to
   all intents and purposes as each of us might or could do in person, hereby
   ratifying and confirming all that said attorneys-in-fact and agents, or
   any of them, or their or his or her substitute(s), may lawfully do or
   cause to be done by virtue thereof.


        WITNESS OUR HANDS ON THE DATES SET FORTH BELOW.

        Pursuant to the requirements of the Securities Act of 1933, this
   registration statement has been signed below by the following persons in
   the capacities and on the dates indicated.

             Signatures                      Title                 Date

    /s/Robert J. O'Toole          Chairman, President, Chief   June 11, 1996
    Robert J. O'Toole                Executive Officer and
                                      Director (Principal
                                      Executive Officer)

    /s/Glen R. Bomberger           Executive Vice President,   June 11, 1996
    Glen R. Bomberger             Chief Financial Officer and
                                      Director (Principal
                                      Financial Officer)

    /s/John J. Kita                Vice President, Treasurer   June 11, 1996
    John J. Kita                   and Controller (Principal
                                      Accounting Officer)


    /s/Tom H. Barrett                      Director            June 11, 1996
    Tom H. Barrett


    /s/Russell G. Cleary                   Director            June 11, 1996
    Russell G. Cleary


    /s/Thomas I. Dolan                     Director            June 11, 1996
    Thomas I. Dolan


    /s/Leander W. Jennings                 Director            June 11, 1996
    Leander W. Jennings


    /s/Dr. Agnar Pytte                     Director            June 11, 1996
    Dr. Agnar Pytte


    /s/Donald J. Schuenke                  Director            June 11, 1996
    Donald J. Schuenke


    /s/Arthur O. Smith                     Director            June 11, 1996
    Arthur O. Smith


    /s/Bruce M. Smith                      Director            June 11, 1996
    Bruce M. Smith


   
        The Plan.  Pursuant to the requirements of the Securities Act of
   1933, the persons who administer the A. O. Smith Profit Sharing Retirement
   Plan have duly caused this Registration Statement to be signed on its
   behalf by the undersigned, thereunto duly authorized, in the City of
   Milwaukee, State of Wisconsin, on June 11, 1996.

                            A. O. SMITH PROFIT SHARING RETIREMENT PLAN



                            By:/s/W. David Romoser                          
                                W. David Romoser
                                Vice President, General Counsel & Secretary
                                A. O. Smith Corporation

   

                                  EXHIBIT INDEX

   Exhibit No.         Exhibits                                Page No.

   4              A. O. Smith Profit Sharing
                  Retirement Plan                                  --

   23             Consent of Ernst & Young LLP                     --

   24             Power of Attorney relating to subsequent 
                  amendments (included on the signature page
                  to this Registration Statement)                  --        


                                                                    Exhibit 4



                                   A. O. SMITH
                         PROFIT SHARING RETIREMENT PLAN






                                                      As Amended and Restated
                                                    Effective January 1, 1989

   
                                   A. O. SMITH
                         PROFIT SHARING RETIREMENT PLAN

                                Table of Contents


   Section                                                      Page

                             ARTICLE I:  DEFINITIONS

     1.1       Definitions                                         1
     1.2       Construction                                        5

                           ARTICLE II:  PARTICIPATION

     2.1       Participation                                       5
     2.2       Eligibility Upon Reemployment                       5
     2.3       Leave of Absence                                    5

                               ARTICLE III:  TRUST

     3.1       Establishment                                       6

                ARTICLE IV:  CONTRIBUTIONS BY ELIGIBLE EMPLOYEES
                                  TO THE TRUST

     4.1       Tax-Deferred Contributions                          6
     4.2       Change in Tax-Deferred Contributions                6
     4.3       Rollover Contributions                              6
     4.4       Transfers of Account Balances                       7
     4.5       Limitations                                         8

                    ARTICLE V:  CONTRIBUTIONS BY THE EMPLOYER
                                TO THE TRUST FUND

     5.1       Company Matching Contributions                      9
     5.2       Limitation on Contributions                        10
     5.3       Individual Employer Contributions                  11
     5.4       Effect of Deficit of Individual Employer           11

                      ARTICLE VI:  INVESTMENT CONTRIBUTIONS

     6.1       Investment Funds                                   11
     6.2       Participant's Elections of Investment Fund         12
     6.3       Transfers Between Funds                            12

       ARTICLE VII:  ALLOCATION OF COMPANY MATCHING CONTRIBUTIONS

     7.1       Allocations                                        12
     7.2       Eligible Employees Sharing in Company Matching
                Contributions                                     12
     7.3       Accounts                                           13

         ARTICLE VIII:  ALLOCATION OF NONVESTED FORFEITURES AND
                     CHANGES IN THE VALUE OF THE TRUST

     8.1       Allocation of Forfeitures                          13
     8.2       Allocation of Changes in Value                     14

                              ARTICLE IX:  BENEFITS

     9.1       Fully Vested Benefits                              14
     9.2       Benefits Upon Other Terminations of Employment     15
     9.3       Special Rule for Divestitures                      15
     9.4       Beneficiaries                                      16
     9.5       Time of Payments                                   16
     9.6       Committee to Direct Payment                        17

                             ARTICLE X:  WITHDRAWALS

    10.1       Withdrawal With Less Than Five Years               17
    10.2       Five-Year Withdrawal                               17
    10.3       Hardship Withdrawals                               17
    10.4       Total Withdrawal at Age 59-1/2                     18
    10.5       Withdrawal by Participants                         18
    10.6       General Conditions Applicable                      19

                             ARTICLE XI:  PLAN LOANS

    11.1       Procedure and Terms                                20

                  ARTICLE XII:  ELIGIBLE ROLLOVER DISTRIBUTION

    12.1       Definitions                                        21
    12.2       Direct Rollover Option                             22

                          ARTICLE XIII:  ADMINISTRATION

    13.1       Committee                                          22
    13.2       Manner of Acting                                   23
    13.3       Standard of Review                                 23
    13.4       Certification of Benefits                          23
    13.5       Benefit Over Payments                              23
    13.6       Plan Administrator; Named Fiduciary                23
    13.7       Elections                                          23

                         ARTICLE XIV:  CLAIMS PROCEDURE

    14.1       Initial Claim                                      24
    14.2       Denial of Claims; Appeals                          24

                             ARTICLE XV:  AMENDMENTS

    15.1       Amendments                                         24

                            ARTICLE XVI:  TERMINATION

    16.1       Termination; Full Vesting                          24
    16.2       Exclusive Benefit; Non-Reversion                   25

                          ARTICLE XVII:  MISCELLANEOUS

    17.1       Plan Not an Extension of Employee Rights           25
    17.2       Spendthrift Clause                                 25
    17.3       Mergers, Consolidations and Transfers of
               Plan Assets                                        25
    17.4       Limitation on Annual Additions                     25
    17.5       Top-Heavy Restrictions                             27
    17.6       Retroactive Revisions                              28

             Schedule A                                           30
             Schedule B                                           31
   

                                   A. O. SMITH
                         PROFIT SHARING RETIREMENT PLAN


                             ARTICLE I:  DEFINITIONS

   Section 1.1.  Definitions.  The following words and phrases when used in
   the Plan, unless the context clearly indicates otherwise, shall have the
   following respective meanings:

   (a)  After-Tax Employee Contributions:  Amounts which were contributed to
        the Plan by Participants on an after-tax basis prior to January 1,
        1987.  Such prior contributions will be retained in the Plan and
        invested and distributed in accordance with its terms.

   (b)  Average Net Worth:  The amount computed by adding together the
        consolidated net worth of the Company and related corporations for
        each month of the Plan Year, computed as of the first day of each
        such month and dividing such sum by the number of months in such Plan
        Year.  Consolidated net worth shall be determined in accordance with
        generally accepted accounting principles except as that: 

        (i)  For Plan Years beginning after 1989, foreign currency
        translations and adjustments to net worth required by Financial
        Accounting Standards Board Statement No. 87, shall not be taken into
        account in the computation; and

        (ii) The one-time adjustment to net worth made by the Company in 1992
        for Financial Accounting Standards Board Statement No. 106 shall be
        disregarded in computing consolidated net worth for Plan Year 1992,
        but such adjustment shall be fully amortized over 20 years.

        The Company shall determine Average Net Worth for each Plan Year and
   shall certify in writing the amount thereof, and such determination in
   good faith shall be final and conclusive for all purposes of the Plan.

   (c)  Board:  The Board of Directors of the Company.

   (d)  Code:  The Internal Revenue Code of 1986, as amended, and all
        applicable regulations issued pursuant thereto.

   (e)  Committee:  The Committee appointed by the Plan Administrator
        pursuant to Section 13.1 to perform duties as provided herein.

   (f)  Company:  A. O. Smith Corporation, a corporation organized under the
        laws of the State of Delaware.

   (g)  Company Matching Contributions:  The contributions made by the
        Employers pursuant to Section 5.1.

   (h)  Compensation:  The total of all salary and commissions paid by an
        Employer to an Eligible Employee, including overtime compensation,
        amounts paid under the Milwaukee Performance Incentive Compensation
        Plan, any Tax-Deferred Contributions, and any other salary reduction
        contributions pursuant to Code Section 401(k) or 125, but excluding
        bonuses and other additional compensation.  The maximum annual
        compensation utilized herein for any Eligible Employee in a Plan Year
        shall be $200,000 (or such higher amount permitted pursuant to
        applicable regulations due to cost of living increases).  Effective
        January 1, 1994 the maximum annual compensation shall be $150,000 (or
        such higher amounts as may be permitted pursuant to applicable
        regulations due to cost of living increases).

   (i)  Controlled Group Member:  Any member of a controlled group of
        corporations, a group of trades or businesses under common control or
        an affiliated service group member, as defined in Code
        Section 414(b), (c) and (m) that includes the Company.

   (j)  Eligible Employee:

        (i)  Any person actively employed by one or more Employers either on
        a semi-monthly salary or commission basis, whose employment is
        scheduled to be, or is actually, at the rate of at least 1,000 Hours
        of Service in a Plan Year.

        (ii) The following persons are not eligible to participate in the
        Plan:

             (A)  directors who are not also officers or employees of an
             Employer;

             (B)  persons retained or leased by an Employer to do independent
             work on a fee or contract basis, including any "leased
             employees" as defined in Code Section 414(n);

             (C)  employees of an Employer who are not regularly employed in
             the United States, except those employees who are affirmatively
             included in the Plan;

             (D)  persons who are employed in a collective bargaining unit
             with which an Employer has a bargaining agreement unless such
             agreement specifically provides that persons in such unit shall
             be covered by the Plan;

             (E)  except by special affirmative action of the Board,
             employees engaged in any division of or at any location of an
             Employer, which division or location exists as the result of
             acquisition by such Employer subsequent to August 1, 1963, of
             the facilities and employees of another business entity which
             was not itself an Employer;

             (F)  persons who are classified as temporary employees; or

             (G)  persons who are classified as weekly salaried employees.

   (k)  Employer:  The Company and those subsidiary and affiliated
        corporations (designated from time to time by the Company as being
        eligible to be included in the Plan) adopting the Plan by appropriate
        corporation action.  As of January 1, 1989 the following subsidiary
        and affiliated corporations are included in the Plan:

                       Smith Fiberglass Products Inc.
                       AgriStor Credit Corporation
                       A. O. Smith Harvestore Products Inc.

   (l)  ERISA:  Employee Retirement Income Security Act of 1974 (P.L. 93-406)
        and all applicable regulations issued pursuant thereto.

   (m)  Fiduciaries:  The Company, the Committee, the Plan Administrator, the
        Investment Policy Committee, and the Trustee, but only with respect
        to the specific responsibilities of each, as required by the Plan.

   (n)  Highly Compensated Eligible Employee:  An Eligible Employee who meets
        the definition of Section 414(q) under the Code for any Plan Year. 
        Notwithstanding the foregoing, to the extent permitted in Revenue
        Procedure 93-42 (or any comparable Internal Revenue pronouncement)
        the determination of a Highly Compensated Eligible Employee may be
        made by means of the simplified identification method described in
        Revenue Procedure 93-42, including the use of a snapshot day if
        applicable.

   (o)  Hour of Service:

        (i)  An Hour of Service shall be an hour for which the employee is
             paid for services performed for a Controlled Group Member and
             such hours directly or indirectly paid for reasons other than
             the performance of duties during the applicable computation
             period, such as vacation, holidays, paid sick or funeral leaves,
             jury duty, layoff, military leaves (as defined in the Veteran's
             Reemployment Rights Act), approved personal leaves, and similar
             paid periods of nonworking time.

        (ii) Hours of Service which are paid for other than at the time they
             accrued shall be deemed accumulated for purposes of the Plan
             during the period for which they accrued regardless of when
             payment is made.

       (iii) Hours of Service shall accrue for periods of absence when an
             employee is on a disability leave and receiving reduced pay from
             a Company sponsored long-term disability program.

        (iv) Upon affirmative resolution of the Board, Hours of Service shall
             be accrued for each Eligible Employee who was employed by a
             predecessor organization prior to its becoming a Controlled
             Group Member.  Schedule A reflects such Board action taken
             through June 30, 1990.

        (v)  Hours of Service shall accrue, unless otherwise counted herein,
             for hours pertaining to back pay awards, irrespective of
             mitigation of damages.

        (vi) Hours of Service shall be counted in accordance with Department
             of Labor Regulations at CFR 2530.200b-2(b) and (c).

   (p)  Investment Policy Committee:  The Investment Policy Committee of the
        Board.

   (q)  Participant:  An Eligible Employee who has elected to make
        Tax-Deferred Contributions to the Plan pursuant to Section 4.1.  The
        term Participant shall also include a former Eligible Employee who
        maintains an account balance in the Plan.

   (r)  Plan:  The profit sharing plan herein set forth as from time to time
        amended, which shall be known as the "A. O. Smith Profit Sharing
        Retirement Plan."

   (s)  Plan Administrator:  The Company.

   (t)  Plan Year:  The 12-month period commencing January 1 and ending
        December 31 of each calendar year.

   (u)  Profit:  The consolidated net income of the Company and related
        corporations, excluding special items of income and expense not
        arising from usual business operations, as determined by the Company,
        for a Plan Year after deduction of taxes on income for such year and
        before deduction of contributions hereunder for such year, computed
        in accordance with generally accepted accounting principles.  The
        Company shall determine Profit for each Plan Year and shall certify
        in writing the amount thereof, and such determination in good faith
        shall be final and conclusive for all purposes of the Plan.

   (v)  Return on Net Worth:  The percentage computed by dividing Profit by
        Average Net Worth.

   (w)  Tax-Deferred Contributions:  Amounts contributed to the Plan by
        Participants pursuant to Section 4.1 which are intended to be
        excluded from the Participant's wages for federal income tax purposes
        in the year of contribution as a "cash or deferred arrangement" under
        Section 401(k) of the Code.

   (x)  Trust:  The trust fund established by the Plan Administrator and
        administrated by the Trustee, as described in Article III.

   (y)  Trustee:  Marshall & Ilsley Trust Company or any successor
        corporation or individuals appointed by the Plan Administrator to
        administer the Trust.

   (z)  Year of Service:  A Plan Year during which an employee accumulates
        any Hours of Service.

   Section 1.2.  Construction.

   (a)  Terms:  Wherever any words are used herein in the masculine, they
        shall be construed as though they were used in the feminine in all
        cases where they  would so apply; and wherever any words are used
        herein in the singular or the plural, they shall be construed as
        though they were used in the plural or the singular, as the case may
        be, in all cases where they would so apply.  The words "hereof",
        "herein", "hereunder", and all other similar compounds of the word
        "here" shall mean and refer to this entire document and not to any
        particular Article or Section.  Titles of Articles and Sections are
        for general information only, and the Plan is not to be construed by
        reference thereto.

   (b)  Applicable Law:  The Plan is intended to qualify under
        Sections 401(a) and 401(k) of the Code and shall be interpreted so as
        to comply with the applicable requirements thereof, where such
        requirements are not clearly contrary to the express terms hereof. 
        In all other respects, the Plan shall be construed and its validity
        determined according to the laws of the State of Wisconsin to the
        extent such laws are not preempted by applicable requirements of
        federal law.  In case any provision of the Plan shall be held illegal
        or invalid for any reason, such illegality or invalidity shall not
        affect the remaining provisions of the Plan, and the Plan shall be
        construed and enforced as if said illegal or invalid provisions had
        never been included herein.

                       ARTICLE II:  PARTICIPATION

   Section 2.1.  Participation.  Each Eligible Employee who was a Participant
   under the provisions of the Plan in effect on December 31, 1988 shall
   continue to be a Participant hereunder.  Every other Eligible Employee may
   become a Participant as soon as administratively feasible after filing an
   election to make Tax-Deferred Contributions in accordance with
   Section 4.1.

   Section 2.2.  Eligibility Upon Reemployment.  If the employment of a
   Participant is terminated for any reason, upon reemployment by an Employer
   as an Eligible Employee, such Eligible Employee shall again be entitled to
   become a Participant as provided in Section 2.1.

   Section 2.3.  Leave of Absence.  Any period of leave of absence or layoff
   as authorized by an Employer shall not be considered to break continuity
   of employment, if the Eligible Employee returns within the period
   authorized in such leave or layoff, and in computing Years of Service for
   all purposes of the Plan, vesting credit shall be given for all such
   periods of authorized absence.

                          ARTICLE III:  TRUST

   Section 3.1.  Establishment.  The Plan Administrator, or any committee as
   it may from time to time appoint, shall establish an account under the
   A. O. Smith Master Trust, to be held and invested by the Trustee pursuant
   to the direction of the Plan Administrator, into which the contributions
   under the Plan shall be deposited.  All contributions made by the
   Employers and Participants under the Plan shall be paid into the Trust
   established under such agreement, and all property of the Trust, including
   income from investments and from all other sources, shall be held by the
   Trustee in the Trust for the exclusive benefit of Participants and their
   beneficiaries as provided by the Plan, and shall be used to pay benefits
   to such Participants as hereinafter provided.  The Trustee's fees and
   expenses in administering the Trust shall be charged to the corpus of the
   Trust as the Company may direct.


     ARTICLE IV:  CONTRIBUTIONS BY ELIGIBLE EMPLOYEES TO THE TRUST

   Section 4.1.  Tax-Deferred Contributions.  In order to share in Company
   Matching Contributions and forfeitures for any Plan Year, an Eligible
   Employee must elect to make Tax-Deferred Contributions to the Trust
   through regular payroll deductions.  Such contributions shall be any whole
   percentage, up to a maximum of 16%, of the Eligible Employee's
   Compensation for each payroll period; provided, however, that the
   Committee may permit or require a contribution to be a fraction of a
   percent in order to satisfy the various limitations on contributions
   hereunder.  The election shall be filed with the Company on such form, in
   the manner, and by the time the Committee prescribes.  Any Tax-Deferred
   Contributions shall be paid to the Trustee as soon as administratively
   feasible after the applicable payroll period.


   Section 4.2.  Change in Tax-Deferred Contributions.

   (a)  Subject to the provisions of this Article, the rate of a
        Participant's Tax-Deferred Contributions shall remain in effect until
        changed or suspended.  A Participant may, by submitting to the
        Company such prior notice as is required by the Committee to assure
        uniform and sufficient processing time, change the percentage of his
        Tax-Deferred Contributions for future payroll periods.

   (b)  A Participant may, by submitting to the Company such prior notice as
        is required by the Committee to assure uniform and sufficient
        processing time, suspend his Tax-Deferred Contributions as of the
        first day of any pay period.  The Participant may resume such
        contributions as of the first pay period following a similar notice.

   Section 4.3.  Rollover Contributions.

   (a)  Subject to subsection (b) below, at the direction of the Plan
        Administrator, the Trustee shall accept benefits (in the form of
        cash) of any Eligible Employee that were maintained in an "individual
        retirement account" as defined in Code Section 408.  The Plan
        Administrator shall not direct the Trustee to accept such benefits
        unless the Committee is satisfied that such benefits were originally
        derived from a retirement trust or annuity qualified under Code
        Section 401 or 403(a) and that such transfer constitutes a valid
        rollover pursuant to Code Section 402(a)(5).  Effective January 1,
        1993, the Trustee shall accept an Eligible Rollover Distribution (as
        defined in Section 12.1) in the form of cash from an Eligible
        Employee.

   (b)  Notwithstanding anything herein to the contrary, the Plan
        Administrator shall not accept benefits if such benefits:

        (i)  would be subject to the qualified joint and survivor annuity
             rules of Code Section 401(a)(11);

        (ii) include contributions made on behalf of the person attempting to
             transfer the benefit while he was a "key employee" in a
             "top-heavy plan" as those terms are defined in Code Section 416;
             or

       (iii) represent a partial distribution under Code Section 402(a)(5)(D)
             made prior to January 1, 1993.

   (c)  For investment purposes, the Trustee shall invest the transferred
        benefits with the other assets of the Trust in accordance with
        Section 6.2.  If no investment direction has been received for the
        transferred benefit, the amounts shall be invested in the Income
        Fund.  Any amounts so transferred shall be designated as "Rollover
        Contributions" by the Trustee in order to provide for the proper
        administration of the Plan.  Distribution shall be made in accordance
        with Section 9.1 or 9.2, as applicable.

   Section 4.4.  Transfers of Account Balances.

   (a)  On a regular basis, the Plan Administrator shall authorize the
        transfer of account balances of Participants who have transferred to
        a status other than as an Eligible Employee to any other profit
        sharing plan of a Controlled Group Member for which such transferred
        Participants have become eligible.  Account balances of Participants
        transferred from the Plan to the Employee 401(k) Savings Plan shall
        become fully vested upon such transfer regardless of the
        Participant's Years of Service.

   (b)  Upon the sale of a division, subsidiary, affiliate or any business
        operation of the Company, the Committee may authorize the transfer of
        account balances of Participants who will continue employment with
        the buyer to any qualified plan maintained by the buyer.  Any such
        plan of the buyer must verify its qualification under Code
        Section 401(a) or 403(a) and its willingness to accept such transfer.

   (c)  Upon the acquisition of a corporation, division or business operation
        by the Company, the Committee may authorize the transfer of account
        balances of employees of seller who will become Eligible Employees
        from any defined contribution plan maintained by the seller to the
        Plan.  Any such plan of the seller must verify its qualification
        under Section 401(a) or 403(a) and certify that the plan is not
        subject to the qualified joint and survivor rules under Code
        Section 401(a)(11).

   Section 4.5.  Limitations.

   (a)  No Participant shall contribute for any calendar year Tax-Deferred
        Contributions or similar tax-deferred contributions to any other plan
        in excess of the amount permitted pursuant to Code Section 402(g)(5). 
        To guarantee the favorable tax treatment of Tax-Deferred
        Contributions, and similar tax-deferred contributions to any other
        plan pursuant to Code Section 401(k) or to ensure compliance with
        Code Section 415, the Committee may prospectively decrease the rate
        of Tax-Deferred Contributions, of any Participant at any time and, to
        the extent permitted by applicable regulations and the limitations of
        Code Section 401(k), may direct the Trustee to refund Tax-Deferred
        Contributions, to any Participant.

   (b)  For any Plan Year, the actual deferral percentage for Highly
        Compensated Eligible Employees shall not exceed the actual deferral
        percentage for Non-Highly Compensated Eligible Employees by more than
        the greater of:

        (i)  the actual deferral percentage of the Non-Highly Compensated
             Eligible Employees multiplied by 1.25, or

        (ii) the actual deferral percentage of the Non-Highly Compensated
             Employees plus two percentage points, subject to a maximum of
             the actual deferral percentage of the Non-Highly Compensated
             Eligible Employees multiplied by 2.0.

   The limitations of Code Section 401(k) and the regulations thereunder,
   including the rules on multiple use of the alternative limitation, are
   incorporated by reference.  In accordance with applicable regulations, the
   Plan Administrator shall direct the Trustee to refund Tax-Deferred
   Contributions to the extent necessary to comply the limitations of this
   subsection.


        ARTICLE V:  CONTRIBUTIONS BY THE EMPLOYERS TO THE TRUST

   Section 5.1.  Company Matching Contributions.  Subject to the Company's
   right to alter, amend, or terminate the Plan, and subject to Section 5.4,
   the Employers shall contribute for each Plan Year a total amount based
   upon the total of all "Eligible Tax-Deferred Contributions" in the Plan as
   of the last day of such Plan Year./1  For purposes of this Section only,
   Eligible Tax-Deferred Contributions shall be defined to include (i) only
   those Tax-Deferred Contributions which are made during the Plan Year by
   Participants who are employed on December 31 of the applicable year or who
   terminated their employment during the Plan Year for one of the reasons
   described in Section 9.1(a) and (ii) only those Tax-Deferred Contributions
   made in that year by such person which are not withdrawn by December 31 of
   such year pursuant to Article X.  Eligible Tax-Deferred Contributions
   shall be limited to a maximum of 6% of the Participant's Compensation for
   such Plan Year.
   _________________

   1/  Prior to Plan Year 1992, the Company Matching Contribution was based
   on Eligible Tax-Deferred Contributions in the Plan on January 1 of the
   following Plan Year.

   For Plan Years prior to 1991, the Company Matching Contribution shall be
   determined in accordance with the following formula:


                                      Company Matching Contribution
                                      Expressed as a Percentage
        When Return on Average        of Eligible Tax-Deferred
        Net Worth is                  Contributions Will Be           

        8% or less                    35%

        Greater than 8% and           35% plus the percentage computed 
        up to 22%                     by multiplying the Return on
                                      Average Net Worth in excess of 8%
                                      by the factor of .075; provided,
                                      however, the maximum total Company
                                      Matching Contribution shall be 140%.

   For Plan Years 1991 and after, the Company Matching Contribution shall be
   determined in accordance with the following formula:

                                 Company Matching Contribution
                                 Expressed as a Percentage
        When Return on Average   of Eligible Tax-Deferred
        Net Worth is             Contributions Will Be           

        5% or less               35%

        Greater than 5% and      35% plus the percentage computed
        up to 10%                by multiplying the Return on
                                 Average Net Worth in excess of 5%
                                 by the factor of .05

        Greater than 10% and     35% plus the sum of
        up to 18%                (i)  the percentage computed by
                                 multiplying the Return on Average
                                 Net Worth in excess of 5% up to
                                 10% by a factor of .05, and
                                 (ii)  the percentage computed by
                                 multiplying the Return on Average 
                                 Net Worth in excess of 10% up to
                                 18% by a factor of .10

   Except as provided in Section 5.4, the 35% Company Matching Contribution
   shall be the minimum contribution and shall be made even though there is
   no Return on Average Net Worth.  In no event shall the Company's Matching
   Contribution exceed 140%.


   Section 5.2.  Limitation on Contributions.

   (a)  No contributions will be made by the Employers on behalf of a
        Participant which will cause excess annual additions pursuant to
        Section 17.4.  If any such contribution is inadvertently made, it
        shall be returned to the Employers as a mistake-of-fact contribution
        to the extent permitted by law or shall be applied to the next
        required contribution by the Employers.

   (b)  For any Plan Year, the actual contribution percentage of Company
        Matching Contributions for Highly Compensated Eligible Employees
        shall not exceed the actual contribution percentage for Non-Highly
        Compensated Eligible Employees by more than the greater of:

        (i)  the actual contribution percentage of the Non-Highly Compensated
             Eligible Employees multiplied by 1.25; or

        (ii) the actual contribution percentage of the Non-Highly Compensated
             employees plus two percentage points, subject to a maximum of
             the actual deferral percentage of the Non-Highly Compensated
             Eligible Employees multiplied by 2.0.

   The limitations of Code Section 401(m) and the regulations thereunder,
   including the rules on multiple use of the alternative limitation, are
   incorporated herein by reference.  In order to ensure compliance with this
   Section, the Committee may require a distribution of excess Employer
   Contributions to the extent of the Participant's vested percentage under
   Article IX, and the nonvested portion, if any, shall be treated as a
   forfeiture.

   Section 5.3.  Individual Employer Contributions.  The contribution to be
   made by each Employer shall be an amount which is based upon Profit as a
   percentage of Average Net Worth.  Such percentage shall be paid on the
   aggregate of the Eligible Tax-Deferred Contributions of its Participants
   for such Plan Year as defined in Section 5.1.

   Section 5.4.  Effect of Deficit of Individual Employer.  No Employer shall
   contribute an amount greater than either its current earnings for that
   year or its accumulated earnings for years prior to that year, whichever
   shall be greater.  If, by reason of this limitation, any Employer is
   precluded from contributing its full share, the remaining Employers shall
   make additional contributions to make up the deficit to the extent that
   such contributions are tax deductible.  If such contributions are not tax
   deductible, one or more of the remaining domestic Employers may, in the
   discretion of the Company, make additional contributions to make up the
   deficit to the extent permitted under the qualification requirements of
   the Code.  If the deficit is not satisfied in whole or in part as provided
   above, the deficit shall stand, and the total contributions shall be
   reduced accordingly.

                ARTICLE VI:  INVESTMENT OF CONTRIBUTIONS

   Section 6.1.  Investment Funds.  The Trust shall be composed of funds
   representing alternatives for investment.  Such funds shall be established
   pursuant to guidelines adopted by the Investment Policy Committee of the
   Board.  At all times there will be a minimum of two such funds
   substantially invested as follows:

        Fund A:   preferred stock, bonds, other securities and property;

        Fund B:   common stock, preferred stock, bonds, and other securities
                  and property which, in the opinion of the applicable
                  investment manager, offer possibilities for capital
                  appreciation.

   In addition, the Plan Administrator may rename the foregoing funds and/or
   establish additional investment funds designed to reflect the guidelines
   established by the Investment Policy Committee.

   Section 6.2.  Participant's Elections of Investment Fund.  Any Participant
   may elect to have the Trustee invest in the available funds certain
   percentage increments of Tax-Deferred Contributions as specified and
   authorized by the Committee, together with any Company Matching
   Contributions allocated to such Participant's account./1  Elections shall
   remain in effect and be deemed applicable until a new election is filed
   and becomes effective.  Any Participant may make a new election under this
   Section at any time.  All amounts credited to a Participant's account for
   which the Participant has not elected a particular investment, pursuant to
   this Section, shall be invested in the Income Fund.

   _______________
   1/ For Plan Years prior to 1991 forfeitures were allocated to the accounts
   of Participants.


   Section 6.3.  Transfers Between Funds.  In accordance with rules
   established by the Committee, each Participant or beneficiary may elect to
   have his interest in any investment fund liquidated and transferred (after
   adjustment for increase or decrease in value pursuant to Article VIII) to
   any of the other available investment funds as of a business day pursuant
   to the daily trading voice response system provided by the Plan or by
   written election.  Any written election shall be effective as soon as
   administratively feasible after receipt of the written election by the
   Plan Administrator.


       ARTICLE VII:  ALLOCATION OF COMPANY MATCHING CONTRIBUTIONS

   Section 7.1.  Allocations.  As soon as administratively feasible following
   the last day of each Plan Year, the Committee shall allocate Company
   Matching Contributions for such Plan Year among the Eligible Employees as
   of such last day of such Plan Year in accordance with the table set forth
   in Section 5.1 based on Eligible Tax-Deferred Contributions as defined in
   Section 5.1.  In all cases, Company Matching Contributions shall be
   credited to Eligible Employees' accounts as of the last day of the first
   month following the end of the Plan Year for which such contributions are
   made.

   Section 7.2.  Eligible Employees Sharing in Company Matching
   Contributions.  For the purposes of Sections 5.1, 7.1 and 8.1, the list of
   Participants as of the last day of any Plan Year shall be deemed to
   include any Participant whose employment was terminated during such Plan
   Year for any of the reasons specified in Section 9.1(a) hereof, provided
   the benefits of such Participant under Section 9.1 were not fully paid
   prior to December 31 of the Plan Year of the Participant's termination of
   employment. (January 1 of the Plan Year following the Participant's
   termination for Plan Years prior to 1992.)  Any Participant whose
   employment was terminated prior to the last day of such Plan Year for any
   reason other than those listed in Section 9.1(a) shall not be eligible to
   share in Company Matching Contributions.

   Section 7.3.  Accounts.  The Committee shall establish an account in the
   name of each Participant to which the Participant's contributions and the
   portion of Company Matching Contributions, as well as increases or
   decreases in value of Trust assets attributable thereto, as hereinafter
   provided.  Notwithstanding any other provision of the Plan, and except as
   provided in Section 9.6, amounts credited to accounts derived from
   After-Tax and Tax-Deferred Contributions and Rollover Contributions under
   Section 4.3(a) shall be nonforfeitable at all times.  Separate balances
   shall be maintained in each such account for Tax-Deferred Contributions,
   After-Tax Employee Contributions, Company Matching Contributions and
   Rollover Contributions invested in each of the Investment Funds.


         ARTICLE VIII:  ALLOCATION OF NONVESTED FORFEITURES AND
                              CHANGES IN THE VALUE OF THE TRUST

   Section 8.1.  Allocation of Forfeitures.

   (a)  The Committee shall establish a separate special account known as the
        "Suspense Account", and shall enter into such account all nonvested
        amounts forfeited by Participants under Sections 9.2 and 9.6.  As of
        each December 31, amounts allocated to the Suspense Account during
        the preceding 12 calendar months, December through November, pursuant
        to Sections 9.2 and 9.6, shall be used to reduce by an equivalent
        amount the Company Matching Contribution under Section 5.1 or to pay
        administrative expenses, as determined by the Company./1

   ____________
   1/  Prior to Plan Year 1992 forfeitures were allocated to Participants.


   (b)  Amounts transferred to the Suspense Account as forfeitures under
        Section 9.2 shall be reconstituted from future forfeitures if a
        Participant completes an Hour of Service in any of the six Plan Years
        next following the Plan Year in which his termination occurred.  In
        such event, a special account shall be established in the name of
        such Participant, reflecting such reconstituted amount and investment
        results thereon from the date of establishment of such account.  At
        any relevant time, the Participant's nonforfeitable interest in such
        special account shall be calculated as follows:

        (i)  determine the value of the previous distribution at the relevant
             time by multiplying the amount of the distribution by the ratio
             of the account balance at the relevant time to the account
             balance immediately after the distribution;

        (ii) add the amount determined in step (i) to the account balance at
             the relevant time and multiply the sum by the vested percentage
             at the relevant time;

       (iii) from the result in step (ii), subtract the value of step (i). 
             The difference is the required nonforfeitable interest.

   If the Participant fails to complete an Hour of Service in the six Plan
   Years next following the Plan Year in which his termination occurred, then
   the amount transferred to the Suspense Account upon the termination of
   such Participant shall be treated as finally forfeited and not subject to
   recapture.

   Section 8.2.  Allocation of Changes in Value.  The Plan Administrator
   shall determine the net increase or decrease in fair market value in each
   investment fund in the Trust (whether realized or unrealized) on each
   business day (calendar month prior to March 1, 1993). Investment gains and
   losses shall be reported net of investment management fees. Such net
   increase or decrease shall be determined and expressed as a percentage of
   the total of all balances of individual Participant accounts invested in
   each such fund after subtracting any payments or withdrawals made from the
   Participant's account. Thereupon, the Plan Administrator shall credit or
   charge to each Participant's account its proportionate share of the
   applicable increase or decrease.


                         ARTICLE IX:  BENEFITS

   Section 9.1.  Fully Vested Benefits.

   (a)  A Participant shall be entitled to receive as benefits hereunder the
        total amount credited to his account, adjusted as provided in
        Section 8.2 until fully paid, upon the termination of his employment
        for any of the following reasons:

        (i)  retirement under the terms of an Employer's retirement plan or
             at or after attainment of age 65;

        (ii) death;

       (iii) total and permanent disability; or

        (iv) termination resulting directly from abolition of job or
             permanent reduction of personnel.

   For purposes of this Section, a Participant shall be deemed to be totally
   and permanently disabled upon a showing that he is receiving either
   long-term disability benefits from a plan sponsored by an Employer or
   Social Security disability benefits.

   (b)  Benefits payable to a Participant eligible under this Section, shall
        be paid in one of the following forms as elected by the Participant:

        (i)  in substantially equivalent annual installments for a period up
             to the lesser of 15 years or the life expectancy of the
             Participant at the time of benefit commencement, provided that
             the minimum annual payment shall be $600; or

        (ii) in a lump sum.

   The date of benefit commencement shall be determined pursuant to
   Section 9.5. Any Participant or beneficiary receiving annual installments
   under (b)(i) above, may, upon written application to the Committee,
   receive the balance of any payments due in a lump sum.

   Section 9.2.  Benefits Upon Other Terminations of Employment. 

   A Participant whose employment is terminated for any reason other than one
   specified in Section 9.1(a) shall forfeit a percentage of the amount of
   Company Matching Contributions and growth thereon credited to his account
   in which he has not become fully vested as of the date of termination as
   determined in accordance with the table set forth below. Such Participant
   shall be entitled to receive as benefits hereunder the remaining balance
   (if any) of such account, including any amount attributable to
   Tax-Deferred or After-Tax Contributions or Rollover Contributions,
   adjusted as provided in Section 8.2, in the form of a lump sum at the time
   specified in Section 9.5.

      Years Of Service      Percentage Of Account Attributable
         At Date Of              To Employer Contributions
         Termination             And Growth Is Vested And
                                      Nonforfeitable

                                             For Those Who Earn
                              Prior To       An Hour Of Service
                           January 1, 1989   On Or After January
                                                   1, 1989

         Less than 2             0%                  0%
              2                  20%                 40%
              3                  30%                 60%
              4                  40%                 80%
              5                  50%                100%
              6                  60%                100%
              7                  70%                100%
              8                  80%                100%
              9                  90%                100%
         10 or More             100%                100%

   Section 9.3.  Special Rule for Divestitures.  The Company may, by action
   of the Board, provide for full and immediate vesting for those
   Participants who are affected by the sale of a subsidiary, division, or
   business operation of the Company. Schedule B reflects such Board action
   with respect of certain divestitures through the date of this restatement.

   Section 9.4.  Beneficiaries.  Each Participant may designate in writing on
   a form provided by the Plan Administrator a beneficiary or beneficiaries
   to receive benefits hereunder in the event of such Participant's death. 
   Any such designation may be revoked or changed at any time by filing a
   change of beneficiary form with the Plan Administrator.  Notwithstanding
   the foregoing, in the event the Participant is married at the time of his
   death, the beneficiary shall be the Participant's spouse at such time
   unless such spouse consented in writing to the designation of an
   alternative beneficiary after notice of the spouse's rights and such
   consent was witnessed by (i) a Plan representative appointed by the
   Committee or (ii) a notary public.  In the event no valid designation of a
   beneficiary is on file with the Plan Administrator at the date of death or
   no designated beneficiary survives him, the Participant's spouse shall be
   deemed the beneficiary.  In the event the Participant is unmarried or his
   spouse does not survive him, the Participant's estate shall be deemed his
   beneficiary.  The form of payment to a beneficiary shall be determined by
   the beneficiary from the options listed in Section 9.1(b) subject to
   Section 9.6.

   Section 9.5.  Time of Payments.  All benefits shall be payable as the
   Participant or beneficiary shall elect, consistent with administrative
   procedures established by the Committee.  Notwithstanding the foregoing,
   the following rules shall apply:

   (a)  All benefits of Participants whose employment is terminated for any
        reason other than ones specified in Section 9.1(a) which do not
        exceed $3,500 shall be distributed to such Participants once each
        Plan Year; the time of such distribution shall be established by the
        Committee;

   (b)  Benefits shall commence as soon as administratively feasible
        following receipt by the Plan Administrator of a request from the
        Participant or beneficiary.  Benefit payments shall commence no later
        than 60 days following the close of the Plan Year in which occurs the
        later of the Participant's termination of employment or the date such
        Participant attains (or would have attained) age 65, unless a
        deferred commencement date is affirmatively elected by the
        Participant or beneficiary;

   (c)  An alternate payee under a qualified domestic relations order shall
        receive payment of the benefits awarded as soon as administratively
        feasible after the order is final unless the order provides
        otherwise.  The provision shall be effective only for orders received
        by the Plan on or after January 1, 1993.

   (d)  If a Participant dies prior to attaining age 70-1/2, his death
        benefit must be completely distributed within five years of his death
        unless (i) his surviving spouse is the beneficiary or (ii) benefits
        are continued to the beneficiary under the installment method
        selected by the Participant;

   (e)  If a Participant dies after attaining age 70-1/2 while he was
        receiving his benefit under an installment method, the remaining
        account balance must be distributed to a spouse beneficiary at least
        as rapidly as the method elected by the Participant;

   (f)  Notwithstanding anything herein to the contrary, benefit payments
        shall begin no later than the April 1 after the end of the Plan Year
        in which the Participant attains age 70-1/2, or for a beneficiary
        surviving spouse the date the Participant would have attained
        age 70-1/2.  There shall be no redetermination of life expectancy for
        any Participant or beneficiary surviving spouse whose benefit
        commences due to this subsection.

   Section 9.6.  Committee to Direct Payment.  The Committee shall certify
   the name of any Participant or beneficiary entitled to benefits under the
   Plan and the amount and manner of payment which shall be made.  Any
   payment to any Participant or to one or more persons deemed by the
   Committee to be the sole beneficiary or beneficiaries of a deceased
   Participant shall be in full satisfaction of all claims against the Trust,
   the Trustee, the Committee, the Plan Administrator and the Employers, and
   shall give rise to no claim or liability notwithstanding that it may later
   appear that such payment or distribution was made under a mistake of fact
   or law.  Whenever reasonable efforts by the Committee fail to locate any
   Participant or beneficiary entitled to payment hereunder before the
   expiration of the time prescribed by law for declaring a person legally
   dead in the state in which the Participant was last employed by the
   Employers, any amount payable to such Participant shall be forfeited to
   the extent permitted by applicable regulations.  Such amount shall be
   reconstituted from future forfeitures if the Participant or beneficiary is
   subsequently located.

                             ARTICLE X:  WITHDRAWALS

   Section 10.1.  Withdrawal With Less Than Five Years.  Subject to
   Section 10.6, a Participant who was first employed less than five years
   prior to the effective date of a withdrawal may elect to withdraw (after
   adjustment for increase or decrease in value pursuant to Section 8.2), any
   portion of the balances credited to his account attributable to After-Tax
   Employee Contributions or Rollover Contributions and earnings thereon.

   Section 10.2.  Five-Year Withdrawal.  Subject to Section 10.6, a
   Participant who was first employed by an Employer at least five years
   prior to the effective date of a withdrawal under this Section may elect
   to withdraw (after adjustment for increase or decrease in value pursuant
   to Section 8.2), any portion of the balance in his account attributable to
   After-Tax Employee Contributions, Rollover Contributions or Company
   Matching Contributions and earnings thereon.

   Section 10.3.  Hardship Withdrawals.

   (a)  Subject to Section 10.6, in addition to withdrawals described in
        Section 10.1 or 10.2, upon a showing of substantial hardship, as
        determined by the Committee, an Eligible Employee may withdraw any
        portion of his account balance upon written request to and approval
        of the Committee.  For purposes of this Section, "substantial
        hardship" shall mean:

        (i)  medical expenses described in Code Section 213(d) incurred or
             expected to be incurred by the Eligible Employee, the Eligible
             Employee's spouse or any dependents of the Eligible Employee (as
             defined in Code Section 152);

        (ii) purchase (excluding mortgage payments) of a principal residence
             for the Eligible Employee;

       (iii) payment of tuition and related fees for the next 12 months of
             post-secondary education for the Eligible Employee or the
             Eligible Employee's spouse, children or dependents; or

        (iv) amounts needed to prevent the eviction of the Eligible Employee
             from his principal residence or foreclosure on the mortgage of
             the Eligible Employee's principal residence.

   The hardship withdrawal shall be limited to the amount of the immediate
   and heavy financial need and shall be made only after the Eligible
   Employee certifies in a form and manner prescribed by the Committee that
   this need cannot be relieved:

        (i)  through reimbursement or compensation by insurance or otherwise;

        (ii) by reasonable liquidation of the Eligible Employee's assets, to
             the extent such liquidation would not itself cause an immediate
             and heavy financial need;

       (iii) by cessation of Tax-Deferred Contributions; and

        (iv) by other distributions or nontaxable (at the time of the loan)
             loans from plans maintained by the Company or any other
             employer, or by borrowing from commercial sources on reasonable
             commercial terms.

   (b)  The earnings on Tax-Deferred Contributions which accrue after
        December 31, 1988 may not be withdrawn under this Section.

   (c)  The Committee may amend this Section in its discretion to permit
        hardship withdrawals pursuant to any rules which satisfy the
        applicable regulations and rulings of the Internal Revenue Service
        from time to time.

   Section 10.4.  Total Withdrawal at Age 59-1/2.  Subject to Section 10.6,
   any Participant with full vesting under Section 9.1 or 9.2 who has
   attained age 59-1/2 and has been employed by the Company for five or more
   years may elect to withdraw all of the balances credited to such
   Participant's account.

   Section 10.5.  Withdrawal by Participants.  Subject to Section 10.6, a
   Participant whose employment terminated for any of the reasons specified
   in Section 9.1(a) may withdraw once a year any portion of his account
   balance.

   Section 10.6  General Conditions Applicable.

   (a)  Any election or application under this Article shall be void if the
        Participant dies or terminates employment prior to the effective date
        of the amount withdrawn.

   (b)  The minimum amount which may be withdrawn under this Article shall be
        $500 or 100% of the Participant's account balance, whichever is less.

   (c)  Any portion of the Participant's account which is invested in Fixed
        Rate Funds may not be withdrawn under Sections 10.1, 10.2, or 10.3.

   (d)  Any withdrawal under this Article shall be charged against the
        Participant's account in the following order:

        (i)  After-Tax Contributions made before January 1, 1987;

        (ii) Pro rata allocation between:

             (A)  After-Tax Contributions made after December 31, 1986; and

             (B)  earnings on (A) above;

       (iii) earnings on (i) above;

        (iv) Rollover Contributions accepted pursuant to Section 4.3 hereof;

        (v)  earnings on (iv) above;

        (vi) Company Matching Contributions;

      (vii)  earnings on (vi) above;

      (viii) Tax-Deferred Contributions;

        (ix) earnings on (viii) accrued on December 31, 1988; and

        (x)  earnings on (viii) accrued after December 31, 1988.

   Where the amount withdrawn is less than the Participant's entire vested
   account balance, equal percentages of such Participant's interests in the
   various investment funds shall be charged on account of such withdrawal.

                             ARTICLE XI:  PLAN LOANS

   Section 11.1.  Procedure and Terms.  An Eligible Employee may apply for a
   loan from his account subject to the following conditions:

   (a)  The maximum loan an Eligible Employee may make from his account shall
        be equal to the lesser of:

        (i)  50% of the vested portion of the Eligible Employee's account
             balance; or

        (ii) $50,000 less the excess of:

             (A)  the highest outstanding loan balance under the Plan during
                  the one-year period ending on the day before the loan is
                  made over;

             (B)  the outstanding balance the date the loan is made.

   (b)  An Eligible Employee may only have one short-term loan (6 to 60
        months) and one long-term loan (5 to 15 years) outstanding at any
        time.  A short-term loan may be for any purpose and must be a minimum
        of $1,000.  A long-term loan must be for the acquisition of a primary
        residence and must be for a minimum of $5,000.  The Eligible Employee
        shall be required to provide such written documentation as the Plan
        Administrator may require establishing that the loan proceeds of a
        long-term loan are to be used to acquire a dwelling unit which is to
        be used as a principal residence.

   (c)  Each loan shall be evidenced by a note on a form approved by the Plan
        Administrator, and shall bear interest at a commercial rate set forth
        in (d) below.  The loan shall be secured by a sufficient portion of
        the Eligible Employee's account balance and shall be repayable in
        level installments of principal and interest over a period selected
        for such loan except that the note shall be payable in full upon
        termination of employment.  The note shall be subject to prepayment
        at any time after six months from the date of commencement of the
        loan, but only in full, and not in part.  Except in the case of
        disability, layoff or leave of absence, payments on the note shall be
        made by payroll deduction and shall be reinvested in the Eligible
        Employee's account in accordance with the current method of
        investment for the Tax-Deferred Contributions.  The Committee is
        hereby empowered to establish a maximum repayment amount or
        percentage of pay for such repayment, and to reduce the amount which
        the Eligible Employee may borrow if necessary to comply with such
        maximum.

   (d)  The Committee shall set the interest rates for loans at the beginning
        of each quarter and such rates shall apply to all loans made during
        that quarter.  The interest rate for a short-term loan shall be the
        Wall Street Journal Prime Rate plus 1%.  The interest rate for a
        long-term loan shall be the 10-year Treasuries Rate plus 2%. 
        Interest rates shall be fixed for the entire loan period.

   (e)  The loan will be made from the Eligible Employee's account in the
        Plan.  Any such loan shall be treated as a segregated investment for
        the appropriate portion of the account of the borrowing Eligible
        Employee.  The interest thereon shall be credited only to his account
        and not to the general income of the Trust.  For purposes of
        allocating income of the Trust or any other appreciation or
        depreciation of the Trust fund for any Plan Year, the account of such
        borrowing Eligible Employee shall be treated as not including the
        unpaid amount of such borrowing.  For all other purposes of the Plan,
        including the provisions dealing with the allocation of contribution
        and the valuation of the  corpus of the Trust, the amount of such
        borrowing shall continue to be treated as part of the borrowing
        Eligible Employee's account, having a fair market value exactly equal
        to the unpaid principal balance thereof at any time when it is
        necessary to determine its fair market value.

   (f)  An application for a loan must be submitted on forms promulgated by
        the Committee, and shall be processed and disbursed in accordance
        with procedures established by the Committee.

   (g)  In the event a note or any installment thereunder is not paid when
        due, the Plan Administrator shall give written notice to the
        Participant sent to his last known address and, if the note or such
        delinquent installment is not paid within 90 days from the date of
        such notice, the Trustee shall have the right to take recourse
        against the collateral securing the same, with full right to exercise
        all remedies granted a secured party under the applicable laws
        (including the Uniform Commercial Code) as in effect in the various
        jurisdiction(s) in which the collateral may be located.

   (h)  If a Participant becomes entitled to a distribution before the loan
        has been repaid in full, the Trustee may distribute the Participant's
        note, as part of the resulting distribution.

   (i)  If so determined by the Committee, an Eligible Employee requesting a
        loan shall pay all out-of-pocket administrative and filing fees
        incurred in processing his loan.

   (j)  A 60-day waiting period is required after a loan prepayment before a
        new loan of the same type (either short-term or loan-term) may be
        requested.


              ARTICLE XII:  ELIGIBLE ROLLOVER DISTRIBUTION

   Section 12.1.  Definitions.  The following words and phrases when used in
   this Article shall, unless the context clearly indicates otherwise, have
   the following respective meanings, which meanings shall not apply to other
   Articles of the Plan unless specifically referred to or clearly intended
   by their usage therein.

   (a)  Direct Rollover:  A payment by the Plan to the Eligible Retirement
        Plan specified by the Distributee.

   (b)  Distributee:  A Participant or a Participant's surviving spouse.  In
        addition, the Participant's spouse or former spouse who is the
        alternate payee under a qualified domestic relations order, as
        defined in Section 414(p) of the Code, is a Distributee with regard
        to the benefit awarded under the qualified domestic relations order.

   (c)  Eligible Retirement Plan:  An individual retirement account described
        in Section 408(a) of the Code, an individual retirement annuity
        described in Section 408(b) of the Code, an annuity plan described in
        Section 403(a) of the Code, or a qualified trust described in
        Section 401(a) of the Code, that accepts the Distributee's Eligible
        Rollover Distribution.  In the case of an Eligible Rollover
        Distribution to the surviving spouse, an Eligible Retirement Plan is
        an individual retirement account or individual retirement annuity.

   (d)  Eligible Rollover Distribution:  Any distribution of all or any
        portion of the benefit of the Distributee, except that an Eligible
        Rollover Distribution does not include the following:

        (i)  Any distribution that is one of a series of substantially equal
             periodic payments (not less frequently than annually) made for
             the life (or life expectancy) of the Distributee or the joint
             lives (or joint life expectancies) of the Distributee and the
             Distributee's designated beneficiary;

        (ii) Any distribution for a specified period of 10 years or more;

       (iii) Any distribution to the extent such distribution is required
             under Section 401(a)(9) of the Code; and

        (iv) The portion of any distribution that is not includible in gross
             income, determined without regard to the exclusion for net
             unrealized appreciation with respect to employer securities.

   Section 12.2.  Direct Rollover Option.  Notwithstanding any provision of
   the Plan to the contrary that would otherwise limit a Distributee's
   benefit election options, with respect to a distribution made on or after
   January 1, 1993, a Distributee may elect, at the time and in the manner
   prescribed by the Plan Administrator, to have any portion of an Eligible
   Rollover Distribution paid directly to an Eligible Retirement Plan
   specified by the Distributee in a Direct Rollover.


                     ARTICLE XIII:  ADMINISTRATION

   Section 13.1.  Committee.  The Plan Administrator shall appoint a
   Committee consisting of not less than three nor more than five persons to
   perform duties which the Plan Administrator may delegate from time to
   time.  Members of the Committee may, but are not required to, be
   Participants.  Members of the Committee may resign at any time and the
   Plan Administrator may remove or replace members, for any reason, at will. 
   Members shall serve on the Committee without compensation for such
   membership.  All necessary expenses of the Committee may be paid in whole
   or in part by the Plan Administrator.  To the extent they are not paid by
   the Plan Administrator, the expenses shall be paid out of the Trust.

   Section 13.2.  Manner of Acting.  The Committee may adopt rules, including
   amendments thereto, appoint such officers and employ agents, attorneys,
   actuaries, or clerical assistants as it may deem necessary for the proper
   administration of the Plan.  Decisions, calculations and determinations
   made by a majority of the Committee then in office, not inconsistent with
   the provisions of the Plan, shall be binding and conclusive on all
   persons.  The Committee shall be entitled to rely upon certificates of the
   Plan Administrator, an Employer or the Trustee as to any information
   pertinent to any decision, calculation or determination under the Plan.

   Section 13.3.  Standard of Review.  The Plan Administrator and the
   Committee have discretionary authority and power to determine eligibility
   for benefits under the Plan and to construe and interpret all terms,
   provisions and sections of the Plan.  The standard of review for all
   actions relating to or challenging any benefit eligibility determination
   or construction or interpretation of the Plan terms, provisions or
   sections by the Plan Administrator or the Committee shall be the arbitrary
   and capricious standard of review.

   Section 13.4.  Certification of Benefits.  The Committee shall certify the
   names of Participants who have made application under the Plan, the amount
   of benefits which shall be or become payable to such Participants, and the
   date payments shall commence and terminate in accordance with the Plan or
   shall arrange for the direct payment of benefits, according to the
   procedure specified in the trust agreement.

   Section 13.5.  Benefit Overpayments.  The Plan Administrator or the
   Committee shall have the right to recover for the Plan and Trust any
   benefit overpayment made to a Participant, beneficiary or alternate payee
   from any future benefits due to such person under the Plan.  The Plan
   Administrator or the Committee shall also have the right to pursue any
   other legal remedy to recover such overpayment.

   Section 13.6.  Plan Administrator; Named Fiduciary.  The Plan
   Administrator and named fiduciary required to be named herein, pursuant to
   Section 402(a)(2) of ERISA, is the A. O. Smith Corporation.  It hereby
   designates that official requests, service of process and inquiries of any
   kind may be directed as follows:

                  Director of Employee Benefits
                  A. O. Smith Corporation
                  11270 West Park Place
                  P.O. Box 23970
                  Milwaukee, WI  53223-0970

   Section 13.7.  Elections.  The Committee may adopt such reasonable rules
   relating to the timeliness of elections hereunder and the manner and place
   of filing the same as it deems necessary or appropriate to the efficient
   administration of the Plan.


                     ARTICLE XIV:  CLAIMS PROCEDURE

   Section 14.1.  Initial Claim.  Claims for benefits shall be made upon
   forms or in such other manner as may be prescribed by the Committee.

   Section 14.2.  Denial of Claims; Appeals.  If any claim is wholly or
   partially denied, the Plan Administrator shall give notice thereof within
   a reasonable period of time after receipt of the claim by the Plan
   Administrator, but no later than 60 days (except in special circumstances
   which make a decision impractical within that time period, then, in any
   event, such decision and notice thereof shall be rendered not later than
   120 days after receipt of the claim request).  The Plan Administrator
   shall render such notices by registered or certified mail to the claimant. 
   Such notice shall set forth the specific reasons for the denial, specific
   reference to Plan provisions on which the denial is based, a description
   of any additional material or information necessary for the claimant to
   perfect the claim, an explanation of why such material or information is
   necessary, and an explanation of the Plan's claim review procedure.

   Review of the claim is initiated by filing a written request therefor with
   the Plan Administrator within 65 days after a notice of denial has been
   received by the claimant.  In the request for such review, the claimant
   may request to review pertinent documents and submit issues and comments
   in writing within the said period.  If after such request is reviewed, the
   claim is subsequently redenied, the Plan Administrator shall give notice
   as specified above in this Section.

                        ARTICLE XV:  AMENDMENTS

   Section 15.1.  Amendments.  The Company reserves the right by action of
   the Board, at any time to modify, alter or amend the Plan in any manner
   which does not cause any part of the assets of the trust to be used for,
   or diverted to, any purpose other than the exclusive benefit of the
   Participants and their beneficiaries; provided, however, that the Company
   may make any amendment it determines necessary or desirable, with or
   without retroactive effect, to cause the Plan to comply with ERISA, the
   Code, or any other applicable laws or regulations.

                       ARTICLE XVI:  TERMINATION

   Section 16.1.  Termination; Full Vesting.  The Company reserves the right,
   by action of the Board, to terminate the Plan.  In case of termination or
   partial termination of the Plan, or in the event there should be a
   permanent discontinuance of Employer contributions, the accounts of all
   Participants affected thereby shall become 100% vested and no longer
   subject to forfeiture and the Committee shall direct the distribution to
   the Participants affected thereby (i) of all amounts credited to their
   accounts as of the date of termination, partial termination or
   discontinuance of contributions, as the case may be, plus (ii) any balance
   in the Suspense Account, allocated as of the date of termination or
   discontinuance of contributions as if constituting Employer contributions,
   and plus (or minus) (iii) any credited or uncharged net increase or
   decrease in the trust fund, credited or charged in the manner in
   Article VII.

   Section 16.2.  Exclusive Benefit; Non-Reversion.  In no event shall any
   part of the assets in the Trust be used for or diverted to any purpose
   other than for the exclusive benefit of Participants or their
   beneficiaries, nor shall any part of the Trust revert to the Employers,
   except as otherwise provided herein.


                      ARTICLE XVII:  MISCELLANEOUS

   Section 17.1.  Plan Not an Extension of Employee Rights.  Neither the
   establishment of the Plan nor any modification thereof, nor the payment of
   any benefits shall be construed as giving any employee or any person
   whomsoever any legal or equitable right against the Employers, the
   Trustee, the Plan Administrator or the Committee, or to enforce the
   payment of any benefits hereunder (unless the same shall be specifically
   provided herein or conferred by affirmative action of the Company or the
   Committee, in accordance with the terms hereof), or as giving any employee
   the right to be retained in the service of the Employers.

   Section 17.2.  Spendthrift Clause.  No benefits payable under the
   provisions of the Plan shall be subject in any manner to anticipation,
   alienation, sale, transfer, assignment, pledge, encumbrance, or charge,
   and any attempt so to anticipate, alienate, sell, transfer, assign,
   pledge, encumber, or charge shall be void; nor shall the Trust be in any
   manner liable for or subject to the debts, contracts, liabilities,
   engagements, or torts of the Participants.  Notwithstanding the foregoing,
   a domestic relations order may be recognized if such order contains
   sufficient information for the Plan Administrator to determine that it
   meets the applicable qualification requirements of Section 414(p) of the
   Code.  The Plan Administrator shall establish written procedures
   concerning the notification of interested parties and the determination of
   the validity of such orders.

   Section 17.3.  Mergers, Consolidations and Transfers of Plan Assets. 
   In the case of any merger, consolidation, or transfer of assets or
   liabilities to any other plan, each Participant in the Plan must be
   entitled to receive (if the Plan then terminated) a benefit immediately
   after the merger, consolidation or transfer which is equal to or greater
   than the benefit he would have been entitled to receive immediately before
   the merger, consolidation or transfer (if the Plan then terminated).

   Section 17.4.  Limitation on Annual Additions.

   (a)  Notwithstanding the other provisions of the Plan, annual additions to
        the account of any Participant for a Plan Year shall not exceed the
        lesser of:

        (i)  $30,000 as adjusted pursuant to Section 415(c)(1)(A) and (d)(1)
             of the Code; or

        (ii) 25% of the Eligible Employee's total compensation (as defined in
             subsection (c) of Section 415 of the Code) from the Employers
             for such Plan Year.

   The term "annual additions" as used in this subsection shall mean the
   amount of Employer contributions, Tax-Deferred Contributions, forfeitures,
   and After-Tax Employee Contributions (if any) allocated to the account of
   the Participant for the Plan Year.  If a Participant also participates in
   another qualified defined contribution plan maintained by an Employer or
   any affiliate thereof, then the sum of his annual additions under the Plan
   and under such other plan shall not exceed the limitations described in
   (i) or (ii) above subject to any special limitations applicable to such
   other plan.  In the event that at the earlier of December 31 or the date
   of a Participant's retirement or termination of employment such limitation
   should be exceeded, then the Participant's annual additions to his account
   shall be reduced as may be necessary to satisfy such limitations.

   (b)  In addition, if a Participant is also participating in a qualified
        defined benefit plan which an Employer or any affiliate thereof
        maintains on his behalf, the limitations of Code Section 415(e) are
        hereby incorporated by reference.  If at the earlier of December 31
        or the date of a Participant's retirement or termination of
        employment such rules are violated, the benefit of any active defined
        benefit plan shall first be reduced accordingly; then, if necessary,
        the annual additions for the Plan Year hereunder shall be reduced to
        satisfy such limitations.

   (c)  In the event that either of the rules set forth in this Section would
        otherwise be violated, there shall be deducted from such
        Participant's account and reallocated equally to each other
        Participant's account such amount as may be necessary to satisfy both
        of such rules; provided that if such reallocation to the accounts of
        other employees is not possible as the result of the application of
        this Section, then the reallocable amounts shall be credited to a
        suspense account subject to the following conditions:

        (i)  amounts in the suspense account shall be allocated as Employer
             contributions at such time, including termination of the Plan or
             complete discontinuance of Employer contributions, as the
             foregoing limitations permit;

        (ii) no investment gains or losses shall be allocated to the suspense
             account;

       (iii) no further Employer contributions shall be permitted until the
             foregoing limitations permit the suspense account's allocation
             to Participants' accounts; and

        (iv) upon termination of the Plan any unallocable amounts in the
             suspense account shall revert to the Employers.

   Section 17.5.  Top-Heavy Restrictions.

   (a)  Notwithstanding any provision to the contrary herein, in accordance
        with Code Section 416, if the Plan is a top-heavy plan for any Plan
        Year, then the provisions of this Section shall be applicable.  The
        Plan is "top-heavy" for a Plan Year if as of its "determination date"
        (i.e., the last day of the preceding Plan Year or the last day of the
        Plan's first Plan Year, whichever is applicable), the total present
        value of the accrued benefits of key employees (as defined in Code
        Section 416(i)(1) and applicable regulations) exceeds 60% of the
        total present value of the accrued benefits of all employees under
        the Plan (excluding those of former key employees) (as such amounts
        are computed pursuant to Section 416(g) and applicable regulations
        using a 5% interest assumption and a 1971 GAM mortality assumption
        for a defined benefit plan) unless such plan can be aggregated with
        other plans maintained by the applicable controlled group in either a
        permissive or required aggregation group and such group as a whole is
        not top-heavy.  Any non-proportional subsidies for early retirement
        and benefit options are counted assuming commencement at the age at
        which they are most valuable.  In addition, a plan is top-heavy if it
        is part of a required aggregation group which is top-heavy.  Any plan
        of a controlled group may be included in a permissive aggregation
        group as long as together they satisfy the Code Section 401(a)(4) and
        410 discrimination requirements.  Plans of a controlled group which
        must be included in a required aggregation group include any plan in
        which a key employee participates and any plan which enables such
        plan to meet the Section 401(a)(4) or 410 discrimination
        requirements.  The present values of aggregated plans are determined
        separately as of each plan's determination date and the results
        aggregated for the determination dates which fall in the same
        calendar year.  A "controlled group" for purposes of this Section
        includes any group of employers aggregated pursuant to Code
        Sections 414(b), (c) or (m).  The calculation of the present value
        shall be done as of a valuation date which for a defined contribution
        plan is the determination date and for a defined benefit plan is the
        date as of which funding calculations are generally made within the
        12-month period ending on the determination date.  Solely for the
        purpose of determining if the Plan, or any other plan included in an
        aggregation group of which the Plan is a part, is top-heavy (within
        the meaning of Section 416(g) of the Code), the accrued benefit of an
        employee other than a key employee (within the meaning of
        Section 416(i)(1) of the Code) shall be determined under (i) the
        method, if any, that uniformly applies for accrual purposes under all
        plans maintained by the controlled group, or (ii) if there is no such
        method, as if such benefit accrued no more rapidly than the slowest
        accrual rate permitted under the fractional accrual rate of
        Section 411(b)(1)(C) of the Code.

   (b)  If the Plan is top-heavy in a Plan Year, the maximum annual
        compensation utilized herein for any employee for such year shall be
        $200,000 (or such higher amount permitted pursuant to applicable
        regulations due to cost-of-living increases), provided that no
        benefit accrued as of the determination date shall be diminished on
        account of this provision.  Effective January 1, 1993 the maximum
        annual compensation for such year shall be 150,000, as adjusted for
        cost of living increases.

   (c)  If a defined contribution plan is top-heavy in a Plan Year, non-key
        employee participants, who have not separated from service at the end
        of such Plan Year will receive allocations of Employer contributions
        and forfeitures at least equal to the lesser of 3% of compensation
        (as defined in Code Section 415) for such year or the percentage of
        compensation allocated on behalf of the key employee for whom such
        percentage was the highest for such year.  If a defined benefit plan
        is top-heavy in a Plan Year and no defined contribution plan is
        maintained, the Employer-derived accrued benefit on a life only basis
        commencing at the normal retirement age of each non-key employee
        shall be at least equal to a percentage of the highest average
        compensation for five consecutive years, excluding any years after
        such Plan permanently ceases to be top-heavy, such percentage being
        the lesser of (i) 20%, or (ii) 2% times the years of service after
        December 31, 1983, in which a Plan Year ends in which the Plan is
        top-heavy.  If the controlled group maintains both a defined
        contribution plan and defined benefit plan which cover the same
        non-key employee, such employee will only be entitled to the defined
        benefit plan minimum.

   (d)  If the controlled group maintains a defined benefit plan and a
        defined contribution plan which both cover one or more of the same
        key employees, and if such plans are top-heavy, then the limitation
        stated in a separate provision of the Plan with respect to the Code
        Section 415(e) maximum benefit limitations shall be amended to refer
        to a 1.0 adjustment on the dollar limitation rather than a 1.25
        adjustment.  This provision shall not apply if the Plan is not "super
        top-heavy" and if the minimum benefit requirements of this Section
        are met when 3% is changed to 4%, 2% is changed to 3%, and 20% is
        changed to an amount not greater than 30% which equals 20% plus 1%
        for each year such plan is top-heavy.  A plan is "super top-heavy" if
        the ratio referred to in subsection (a) above results in a percentage
        in excess of 90% rather than a percentage in excess of 60%.

   Section 17.6.  Retroactive Revisions.  The provisions of Section 1.1(j)
   with respect to leased employees, of Sections 4.5 and 5.2 with respect to
   contribution limitations and of Section 17.4 with respect to benefit
   limitations, shall apply retroactively from and after January 1, 1987.


        IN WITNESS WHEREOF, the Company has caused this instrument to be
   executed by its duly authorized officers on this        day of             
   1994, effective January 1, 1989 except as provided in Section 17.6.

                                 A. O. SMITH CORPORATION



                                 By                                      

                                 Title                                   


   ATTEST:

                                                   

   
                               SCHEDULE A
                           Section 1.1(o)(iv)



                              Acquisition         Hours of
      Acquisition                Date           Service Date  

   Westinghouse Electric   May 19, 1986       Most recent date
    Corporation                               of hire with
   (Small Motor Division)                     Westinghouse.


   Koch Engineering        December 30, 1987  The date that vesting service 
    Company Inc.                              commenced with Koch.


   TRW's Williston Plan    April 28, 1990     Most recent date
   (Exempt employees only)                    of hire with TRW.

   

                                   SCHEDULE B
                                   Section 9.3



        Date of                                Date Participation
     Divestiture               Divestiture     In Plan Terminated

   A. O. Smith Data         December 22, 1986  December 31, 1986
    Systems Inc.

   Cad Comp, Inc.           December 23, 1987  December 31, 1987

   Sterling Electric Inc.   December 31, 1988  December 31, 1988

   A. O. Smith Electronics  April 30, 1990     April 30, 1990
    Group

  

                                                                 Attachment 1
                                                                  May 7, 1996


                  RESOLUTION OF THE INVESTMENT POLICY COMMITTEE
              OF THE BOARD OF DIRECTORS OF A. O. SMITH CORPORATION
   -----------------------------------------------------------------------

                              AMENDMENT OF CERTAIN
                            A. O. SMITH SAVINGS PLANS

        WHEREAS, A. O. Smith Corporation (the "Company") maintains the
   savings plans listed below (the "Plans") for the exclusive benefit of
   eligible employees of the Company; and

        WHEREAS,  the Plans were amended by a Resolution of the Investment
   Policy Committee of the Board of Directors of A. O. Smith Corporation on
   February 6, 1996, to create a Company stock investment option and add a
   monthly withdrawal option for employees who are age 59 1/2 or older; and

        WHEREAS, the Company desires to rescind the February 6, 1996,
   Resolution and replace it with the following resolution:

        RESOLVED, that the February 6, 1996, Resolution is rescinded and is
   to be of no effect.

        FURTHER RESOLVED, the Plans described below are hereby amended as
   follows:

        Effective January 1, 1995, an Employee who is age 59 1/2 or older
   with a fully vested account balance may make a monthly withdrawal of all
   or any portion of his account.

        The Plans to be amended are as follows:

             A. O. Smith Employee 401(k) Savings Plan
             A. O. Smith Profit Sharing Retirement Plan
             A. O. Smith Savings and Investment Plan
             A. O. Smith Savings and Security Plan
             A. O. Smith Savings Plan

        FURTHER RESOLVED, effective July 1, 1996, an employer stock
   investment option shall be added to the A. O. Smith Profit Sharing
   Retirement Plan which shall consist of A. O. Smith Corporation common
   stock.  An Employee shall be allowed to contribute up to 25% of his
   current contributions to this fund.  In addition, an Employee may 
   transfer funds to the A. O. Smith stock investment fund from other funds
   in the Plan to the extent that the Employee's investment in the A. O.
   Smith stock investment fund does not exceed 25% of the Employee's account
   balance. 

        FURTHER RESOLVED, that the officers of this Company be, and they
   hereby are, authorized, empowered and directed to take all such action, do
   all such things and execute all such agreements, documents and papers as
   they shall deem proper or necessary to carry out the tenor and purport of
   this resolution, including the making of such changes or additions to the
   Plan as they deem necessary or advisable and which do not change any of
   the substantive provisions of the Plan, and to obtain a favorable ruling
   from the Internal Revenue Service with respect to the continued qualified
   status of the Plan under applicable sections of the Internal Revenue Code.



                                                                   Exhibit 23



                    CONSENT OF INDEPENDENT AUDITORS


        We consent to the incorporation by reference in the Registration
   Statement (Form S-8) pertaining to the A. O. Smith Profit Sharing
   Retirement Plan of our report dated January 16, 1996 with respect to the
   consolidated financial statements and schedule of A. O. Smith Corporation
   included in its Annual Report (Form 10-K) for the year ended December 31,
   1995, filed with the Securities and Exchange Commission.


                                           ERNST & YOUNG LLP


   Milwaukee, Wisconsin

   June 10, 1996