<DOCUMENT>
<TYPE>EX-12.(A)
<SEQUENCE>4
<FILENAME>e15109ex12a.txt
<DESCRIPTION>CERTIFICATIONS OF OFFICERS
<TEXT>
                                                                   Exhibit 12(a)

                              Annual Certifications
            Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

      Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a)
and (b) of Section 1350,  Chapter 63 of Title 18,  United States Code),  each of
the  undersigned  officers of Grupo Simec,  S.A. de C.V. (the  "Company"),  does
hereby certify, to such officer's knowledge, that:

      The Annual Report on Form 20-F for the year ended December 31, 2002 of the
      Company fully complies with the  requirements of Section 13(a) or 15(d) of
      the Securities Exchange Act of 1934 and information  contained in the Form
      20-F fairly presents,  in all material respects,  the financial  condition
      and results of operations of the Company.

                                               /s/ Luis Garcia Limon
                                               ---------------------------
                                               Luis Garcia Limon
                                               Chief Executive Officer

                                               /s/ Adolfo Luna Luna
                                               ---------------------------
                                               Adolfo Luna Luna
                                               Chief Financial Officer


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</TEXT>
</DOCUMENT>
