EXHIBIT 5.1

                         [BARNES GROUP INC. LETTERHEAD]

                                             May 16, 1997

          Barnes Group Inc.
          123 Main Street
          Bristol, Connecticut  06010

          Ladies and Gentlemen:

                    I am a Vice President and the General Counsel
          of Barnes Group Inc., a Delaware corporation (the "Compa-
          ny"), and I have acted as legal counsel to the Company in
          connection with the filing with the Securities and Ex-
          change Commission of a Registration Statement on Form S-8
          under the Securities Act of 1933, as amended (the "Regis-
          tration Statement"), relating to 1,500,000 shares (the
          "Shares") of the Company's common stock, par value $.01
          per share (the "Common Stock"), issuable under the 1991
          Barnes Group Stock Incentive Plan adopted April 3, 1991,
          as amended from time to time (the "Plan").

                    In my capacity as General Counsel of the Compa-
          ny, I have examined and am familiar with (i) the Regis-
          tration Statement; (ii) the Plan; (iii) the Restated
          Certificate of Incorporation and the By-Laws of the
          Company, each as amended to date; (iv) certain resolu-
          tions adopted by the Board of Directors of the Company
          relating to the issuance of the Shares pursuant to the
          Plan and certain related matters; and (v) such agree-
          ments, certificates of public officials, certificates of
          officers or representatives of the Company and others and
          such other documents, certificates and records as I have
          deemed necessary or appropriate as a basis for the opin-
          ions set forth herein.  In such examination, I have
          assumed the genuineness of all signatures, the legal
          capacity of natural persons, the authenticity of all
          documents submitted to me as originals, the conformity to
          original documents of all documents submitted to me as
          certified, conformed or photostatic copies and the au-
          thenticity of the originals of such latter documents.  As
          to any facts material to the opinion expressed herein
          that I have not independently established or verified, I
          have relied upon statements and representations of officers 
          and other representatives of the Company and others.

                    I am admitted to the Bar of the State of Connecti-
          cut, and I express no opinion as to the laws of any other
          jurisdiction.  

                    Based upon and subject to the foregoing, I am
          of the opinion that the Shares have been duly authorized
          for issuance and, when the Shares have been paid for and
          certificates therefor have been issued and delivered in
          accordance with the terms of the Plan, the Shares will be
          legally issued, fully paid and nonassessable.

                    I consent to the filing of this opinion as an
          exhibit to the Registration Statement but do not thereby
          admit that I come within the category of persons whose
          consent is required under Section 7 of the Securities Act
          of 1933, as amended, or the Rules and Regulations of the
          Securities and Exchange Commission thereunder.

                    I am furnishing this opinion in connection with
          the filing of the Registration Statement, and it is not
          to be used, circulated, quoted or otherwise referred to
          for any other purpose or relied upon by any other person
          without my express written permission.

                                        Very truly yours,

                                        /s/ William V. Grickis, Jr.
                                        ----------------------------
                                        William V. Grickis, Jr.