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


         In connection with the Quarterly Report of Kennametal Inc. (the
"Corporation") on Form 10-Q for the period ended December 31, 2002 as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), each
of the undersigned officers of the Corporation certifies, pursuant to 18 U.S.C.
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of
2002, that, to his knowledge:

         (1) The Report fully complies with the requirements of Section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

         (2) The information contained in the Report fairly presents, in all
material respects, the financial condition and result of operations of the
Corporation.


/s/ MARKOS I. TAMBAKERAS
-------------------------------------------------
Markos I. Tambakeras
Chairman, President and Chief Executive Officer
Kennametal Inc.

February 14, 2003




/s/ F. NICHOLAS GRASBERGER III
-------------------------------------------------
F. Nicholas Grasberger III
Vice President and Chief Financial Officer
Kennametal Inc.

February 14, 2003

         *This certification is made solely for purposes of 18 U.S.C. Section
1350, subject to the knowledge standard contained therein, and not for any other
purpose.