SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                     FORM 15

      Certification and Notice of Termination of Registration under Section
          12(g) of the Securities Exchange Act of 1934 or Suspension of Duty to
          File Reports Under Sections 13 and 15(d) of the Securities
                              Exchange Act of 1934.

                                                 Commission File Number: 1-12068

                              METALDYNE CORPORATION
                       (formerly known as MascoTech, Inc.)
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             (Exact name of registrant as specified in its charter)


       47603 Halyard Drive, Plymouth, Michigan 48170-2429, (734) 207-6200
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              (Address, including zip code, and telephone number,
       including area code, of registrant's principal executive offices)


               4 1/2% Convertible Subordinated Debentures Due 2003
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            (Title of each class of securities covered by this Form)


                          Common Stock, $1.00 par value
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                 (Titles of all other classes of securities for
       which a duty to file reports under section 13(a) or 15(d) remains)

         Please place an X in the box(es) to designate the appropriate rule
provision(s) relied upon to terminate or suspend the duty to file reports:

         Rule 12g-4(a)(1)(i)    [  ]       Rule 12h-3(b)(1)(ii)   [  ]
         Rule 12g-4(a)(1)(ii)   [  ]       Rule 12h-3(b)(2)(i)    [  ]
         Rule 12g-4(a)(2)(i)    [  ]       Rule 12h-3(b)(2)(ii)   [  ]
         Rule 12g-4(a)(2)(ii)   [  ]       Rule 15d-6             [  ]
         Rule 12h-3(b)(1)(i)    [X]

     Approximate number of holders of record as of the certification or notice
date: 19

     Pursuant to the requirements of the Securities Exchange Act of 1934,
Metaldyne Corporation has caused this certification/notice to be signed on its
behalf by the undersigned duly authorized person.

DATE:  December 21, 2001                   BY: /s/ William M. Lowe
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                                                   William M. Lowe


Instruction: This form is required by Rules 12g-4, 12h-3 and 15d-6 of the
General Rules and Regulations under the Securities Exchange Act of 1934. The
registrant shall file with the Commission three copies of Form 15, one of which
shall be manually signed. It may be signed by an officer of the registrant, by
counsel or by any other duly authorized person. The name and title of the person
signing the form shall be typed or printed under the signature.