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 6145-00-269-4271
NSN 5975-01-585-6404
NSN 6105-01-216-9442
NSN 5925-00-163-2096
NSN 6150-01-367-2400
NSN 6145-01-008-0442
NSN 6105-01-063-7704
NSN 5925-01-228-3036
NSN 5920-01-520-4447
NSN 5985-00-251-0246
NSN 6645-01-061-5516
NSN 6620-01-238-6910