For a nbr 2 screw
No other part numbers with same form, fit, and function found.
A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces
Classification: Spring washers and other lock washers, iron or steel
NSN 5945-00-854-4635
NSN 5910-00-269-4755
NSN 4140-00-907-6967
NSN 5925-01-487-6830
NSN 6650-01-652-4361
NSN 5990-01-516-9665
NSN 5998-01-223-9175
NSN 5960-01-580-6360
NSN 6110-01-045-4160
NSN 5975-01-199-3221
NSN 6150-00-724-4947
NSN 5945-00-013-9787