6630-00-921-8461 (82E0067R010)
6630-00-921-8461 is equivalent to manufacture part number 41539. It is a graduatedscale hydrometer 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.