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 5835-01-010-3103
NSN 6240-00-646-6931
NSN 6135-00-276-7625
NSN 5950-00-170-6790
NSN 5945-00-162-5950
NSN 5935-01-477-2761
NSN 5895-00-471-5711
NSN 5855-01-068-3683
NSN 5935-01-319-9070
NSN 5920-00-901-7436
NSN 5920-00-189-0858
NSN 5855-00-118-8762