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
NSN
NSN 5996-01-521-6988
NSN 6320-01-271-0247
NSN 5975-01-153-1927
NSN 6320-01-346-5158
NSN 6610-01-340-1761
NSN 6105-00-259-1692
NSN 6135-01-069-2482
NSN 6320-01-571-4530
NSN 5895-00-930-5889
NSN 6685-00-711-0616
NSN 5915-00-810-0164