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 4140-01-207-0452
NSN 6130-01-239-3050
NSN 5999-01-546-8240
NSN 5965-00-503-7572
NSN 6685-01-512-2014
NSN 5950-01-063-7638
NSN 6645-01-496-0073
NSN 5999-01-330-7797
NSN 6620-01-505-7921
NSN 5930-01-087-2665
NSN 6320-01-411-6610
NSN 6220-01-089-0886