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 5920-00-539-7847
NSN 6320-01-425-1417
NSN 5950-01-359-0215
NSN 6240-01-322-4887
NSN 5950-00-539-1081
NSN 6135-00-078-9931
NSN 5996-00-986-8853
NSN 5920-01-431-3263
NSN 5996-00-670-0881
NSN 6685-00-557-8622
NSN 6110-00-945-8204
NSN 6220-01-487-3904