A washer or cone or disk shape with a centrally located hole, designed to accommodate a flat or oval head screw and provide additional bearing area on the material being fastened. It may or may not have a flush flange feature.
Classification: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 5960-00-981-8653
NSN 6110-00-170-6520
NSN 6135-01-104-3790
NSN 5950-01-540-3561
NSN 5990-01-189-9338
NSN 6110-00-172-3707
NSN 5960-01-023-8037
NSN 5910-01-512-5249
NSN 5925-01-327-0943
NSN 6220-01-441-2889
NSN 2925-01-334-7122
NSN 6645-01-367-2581