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 5990-01-652-7373
NSN 5965-01-337-1217
NSN 6620-01-537-0902
NSN 5945-01-624-5630
NSN 5935-01-553-6697
NSN 5935-01-338-0013
NSN 2925-00-497-7808
NSN 5855-00-560-0110
NSN 5835-01-197-0390
NSN 5990-01-470-2565
NSN 5990-00-518-0684
NSN 6240-01-054-2289