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 March 31, 2003 (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.


May 13, 2003
                                         /s/ Jeffrey D. Gash
                                         -------------------
                                         Jeffrey D. Gash
                                         Executive Vice President,
                                         Finance and Secretary
                                         (Principal Financial Officer)