Exhibit 99.10


                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002



The undersigned, Executive Vice President, Finance and Secretary of Jaco
Electronics, Inc. (the "Company"), hereby certifies, to the best of my
knowledge, that: (1) the Quarterly Report on Form 10-Q of the Company for the
quarterly period ended December 31, 2002 (the "Periodic Report") accompanying
this certification fully complies with the requirements of Section 13(a) or
15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and (2)
the information contained in the Periodic Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company. The foregoing certification is provided solely for purposes of
complying with the provisions of Section 906 of the Sarbanes-Oxley Act of 2002
and is not intended to be used for any other purpose.


February 14, 2003
                                   /s/ Jeffrey D. Gash
                                   --------------------------------------
                                   Jeffrey D. Gash
                                   Executive Vice President, Finance and
                                   Secretary
                                   (Principal Financial Officer)