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 5915-01-463-8413
NSN 5999-01-505-0074
NSN 6650-01-264-9076
NSN 6645-01-163-9930
NSN 5985-01-419-3502
NSN 5950-00-932-3232
NSN 4140-00-790-4691
NSN 5915-01-601-4993
NSN 6135-00-209-6918
NSN 6105-00-264-3822
NSN 5910-00-803-8724
NSN 5935-01-656-1696