A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.
Classification: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 6220-00-910-4793
NSN 5999-00-767-5332
NSN 6610-01-053-6781
NSN 4140-00-021-2807
NSN 6105-00-018-2341
NSN 6645-00-033-8714
NSN 5960-00-110-3285
NSN 5935-00-407-2556
NSN 5998-01-390-2627
NSN 6220-01-333-7978
NSN 5835-01-013-9321
NSN 5930-00-489-5067