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 5990-01-268-2236
NSN 6130-01-213-3157
NSN 4140-00-189-0235
NSN 5950-01-359-1997
NSN 5920-01-240-2362
NSN 5835-01-498-9410
NSN 6240-01-069-2688
NSN 5905-01-094-6735
NSN 6220-01-212-0891
NSN 6685-01-441-6443
NSN 5960-01-116-2092
NSN 5990-00-362-1453