Aviation mission zone bridge crane, model 20858 table 7-10, page 7-19
A bent spring metal washer with a centrally located hole. It is designed to exert pressure axially when assembled in place.
NSN 6240-00-906-6116
NSN 5910-00-275-0827
NSN 5945-01-461-1463
NSN 5999-01-500-1835
NSN 5855-00-925-0114
NSN 5835-01-254-5279
NSN 6105-00-161-1834
NSN 5925-01-385-7855
NSN 5905-01-289-0211
NSN 6320-01-089-9086
NSN 4140-01-242-8254
NSN 5915-01-027-0800