EXHIBIT 99.1


                                  CERTIFICATION
           PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
               (CHAPTER 63, TITLE 18 U.S.C. (SS.) 1350(A) AND (B))

         Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Chapter 63,
Title 18 U.S.C. (ss.) 1350(a) and (b)), the undersigned hereby individually
certifies in his capacity as an officer of TriMas Corporation (the "Company")
that the Annual Report of the Company on Form 10-K for the year ended December
31, 2002 fully complies with the requirements of Section 13(a) of the Securities
Exchange Act of 1934 and that the information contained in such report fairly
presents, in all material respects, the financial condition and results of
operations of the Company.

Date:   March 28, 2003           /s/ Grant H. Beard
                                 -----------------------------------------------
                                 Grant H. Beard
                                 Chief Executive Officer


         The foregoing certification is being furnished solely pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002 (Chapter 63, Title 18 U.S.C.
(ss.) 1350(a) and (b)), is not a part of the Form 10-K to which it refers and
is, to the extent permitted by law, provided by the above signatory to the
extent of his knowledge.

         A signed original of this written statement required by Section 906 has
been provided to TriMas Corporation and will be retained by TriMas Corporation
and furnished to the Securities and Exchange Commission or its staff upon
request.