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 5935-01-435-6574
NSN 5935-00-290-1778
NSN 4140-00-248-6089
NSN 6220-01-585-3066
NSN 5920-00-991-2262
NSN 6105-00-948-1002
NSN 7035-01-335-8872
NSN 6685-01-568-3812
NSN 5935-01-485-6361
NSN 6220-01-610-6565
NSN 5935-01-025-6187
NSN 5930-01-067-9477