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 6620-00-993-5547
NSN 4140-01-520-4491
NSN 5965-01-359-0384
NSN 6150-01-582-1272
NSN 6645-00-099-6913
NSN 5990-01-443-2931
NSN 5915-01-199-7176
NSN 5905-01-293-9896
NSN 5835-00-804-0569
NSN 2925-01-497-1364
NSN 4140-01-474-1651
NSN 5930-00-884-0762