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 6110-01-227-8597
NSN 6135-00-284-1406
NSN 5965-00-076-9561
NSN 5965-01-105-4194
NSN 6650-01-555-8349
NSN 6145-01-099-0448
NSN 6240-01-502-7280
NSN 6130-01-485-3483
NSN 6685-00-951-8492
NSN 6240-01-512-1856
NSN 5999-01-491-0629
NSN 5915-01-446-3837