6760-00-403-0318 (21002120)
6760-00-403-0318 is equivalent to manufacture part number 21002120. It is a an aperature insert 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.