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 5905-00-344-0290
NSN 5935-01-515-8777
NSN 6240-00-334-6766
NSN 6645-01-275-8436
NSN 7035-00-500-7839
NSN 6220-01-045-9091
NSN 6135-00-519-1325
NSN 6105-01-029-3582
NSN 5950-01-603-8094
NSN 6145-01-515-8085
NSN 5960-00-597-2680
NSN 6110-00-942-4837