6230-01-500-3989 (B-444-BW)
6230-01-500-3989 is equivalent to manufacture part number B-444-BW. It is a utility light filter and is classified under Federal Supply Class 6230 (6230 - Portable Electric Lights), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6230 - Portable Electric Lights and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.