6760-00-291-5857 (2278PH)
6760-00-291-5857 is equivalent to manufacture part number 2278PH. It is a photographic lantern slide mask and is classified under Federal Supply Class 6760 (6760 - Photographic Accessories), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6760 - Photographic Accessories and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.