6630-01-328-2285 (90-8-21-30)
6630-01-328-2285 is equivalent to manufacture part number 478509. It is a reference electrod inner element and is classified under Federal Supply Class 6630 (6630 - Chemical Analysis Instruments), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6630 - Chemical Analysis Instruments and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.