Actual matl is 410 stainless steel
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 6240-01-507-3609
NSN 2925-01-424-0235
NSN 5996-01-167-9234
NSN 5950-00-615-9933
NSN 6150-01-299-6081
NSN 5855-00-014-5008
NSN 6135-01-231-4809
NSN 4140-01-057-2915
NSN 5975-00-988-5815
NSN 6145-01-270-1856
NSN 5905-01-374-7633
NSN 5999-01-142-2090