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 5999-01-457-8585
NSN 6685-00-543-1409
NSN 6135-01-067-8331
NSN 6240-00-860-3090
NSN 5835-01-185-1102
NSN 5920-01-127-3544
NSN 5835-01-464-7038
NSN 5945-00-281-4578
NSN 5920-01-320-3953
NSN 6650-01-114-9514
NSN 6130-01-003-8041
NSN 6620-01-141-3554