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 2925-00-456-7627
NSN 6645-01-400-2119
NSN 6145-01-327-3328
NSN 6240-01-476-7935
NSN 6110-01-627-5991
NSN 5895-01-170-4874
NSN 6130-01-477-4703
NSN 4140-01-477-5472
NSN 5998-01-035-8673
NSN 5965-01-470-0393
NSN 6320-00-977-3930
NSN 6645-01-340-7354