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 5950-01-108-7690
NSN 6220-01-143-3406
NSN 6645-01-168-8465
NSN 6150-00-693-4818
NSN 5905-01-182-9293
NSN 5998-01-293-2551
NSN 5835-00-912-5656
NSN 6620-01-542-8709
NSN 6135-01-220-7193
NSN 5998-01-561-3183
NSN 5945-00-869-9471
NSN 5910-00-414-7881