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 5855-00-256-5562
NSN 5855-01-374-4916
NSN 5835-01-414-3258
NSN 5895-01-021-9115
NSN 4140-01-618-3705
NSN 5998-01-364-1402
NSN 6240-00-478-3858
NSN 6105-00-353-8153
NSN 6610-00-371-5953
NSN 5925-00-889-4990
NSN 5895-01-501-5901
NSN 6240-00-241-2288