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 6145-01-425-7223
NSN 5950-01-575-3794
NSN 5910-01-419-6765
NSN 6105-00-012-6796
NSN 5950-01-252-3985
NSN 5920-01-160-9260
NSN 5915-01-440-3998
NSN 5925-01-580-0279
NSN 6620-01-494-6055
NSN 5990-01-449-7090
NSN 5945-00-548-4727
NSN 5996-00-466-9781