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 7035-01-633-9537
NSN 6220-01-119-0742
NSN 6220-00-422-2355
NSN 6105-01-345-8373
NSN 5930-01-074-6693
NSN 5996-00-316-3386
NSN 5950-01-260-2779
NSN 6150-00-361-9880
NSN 5999-00-437-5362
NSN 5895-01-089-7858
NSN 5895-01-123-4008
NSN 6220-01-461-2910