Hardness rating: not rated
A bent spring metal washer with a centrally located hole. It is designed to exert pressure axially when assembled in place.
NSN 6220-01-355-6316
NSN 6240-01-414-6074
NSN 5910-01-081-4954
NSN 5975-01-025-1613
NSN 5998-01-391-7385
NSN 6645-01-352-5675
NSN 5905-01-407-8069
NSN 6150-00-174-1524
NSN 7035-01-243-8523
NSN 5996-00-727-8664
NSN 5985-01-509-9734
NSN 6650-01-437-9557