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 6650-00-241-0970
NSN 6220-01-139-3520
NSN 5996-01-597-0977
NSN 2925-01-374-2402
NSN 2925-01-437-1128
NSN 5915-01-158-2420
NSN 6105-00-557-8962
NSN 5930-01-503-2793
NSN 5990-01-605-4769
NSN 5999-00-920-8486
NSN 5945-00-900-7581
NSN 5905-00-766-4927