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 5985-01-219-8240
NSN 5960-00-794-7463
NSN 6145-01-246-3988
NSN 6650-01-177-4398
NSN 5975-01-467-3464
NSN 5945-01-440-9874
NSN 5930-01-510-4475
NSN 5950-01-576-9999
NSN 2925-01-629-9416
NSN 6105-01-643-5520
NSN 5925-01-519-2627
NSN 4140-01-017-2184