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 5895-00-471-5711
NSN 5895-01-574-3893
NSN 5935-01-415-0887
NSN 6240-01-438-1157
NSN 5895-01-433-4720
NSN 6645-00-794-4576
NSN 6145-01-041-1907
NSN 6685-01-647-0559
NSN 5925-01-525-2763
NSN 5915-01-510-9763
NSN 5975-01-065-2265
NSN 5996-01-495-2923