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 6110-01-424-0078
NSN 5960-01-084-7381
NSN 6150-00-314-5242
NSN 5985-01-229-5741
NSN 6645-00-049-6713
NSN 5950-01-466-7369
NSN 5925-00-792-9073
NSN 6145-00-814-3191
NSN 6145-01-293-2055
NSN 5835-01-352-6725
NSN 2925-01-446-6976
NSN 6240-01-503-8717