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 5910-01-443-1506
NSN 5950-01-082-7297
NSN 2925-00-263-2714
NSN 6150-01-115-2117
NSN 6110-01-449-7570
NSN 6130-00-166-7934
NSN 6105-01-077-5559
NSN 6650-01-428-2251
NSN 6150-00-141-0293
NSN 6145-01-068-7516
NSN 6610-01-436-6884
NSN 5925-00-272-8959