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 6220-01-382-0920
NSN 6240-00-132-0955
NSN 6220-01-200-3410
NSN 5985-00-339-2318
NSN 6220-00-806-2616
NSN 6110-01-025-0507
NSN 5945-01-470-2159
NSN 6620-01-468-0357
NSN 5835-00-996-2912
NSN 6685-01-371-9207
NSN 6610-01-371-3006
NSN 6320-00-228-5678