1/4 inch
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 5915-00-736-3751
NSN 6110-01-537-4693
NSN 6620-00-555-3992
NSN 5910-00-781-9712
NSN 5990-01-369-6915
NSN 6220-00-484-5937
NSN 6610-00-251-0369
NSN 2925-01-197-7864
NSN 5960-01-276-7836
NSN 7035-01-479-5268
NSN 7035-00-529-3128
NSN 5930-00-259-3712