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 5920-01-259-4258
NSN 5950-01-406-7920
NSN 5835-01-336-1153
NSN 5855-01-641-2736
NSN 6135-00-100-8890
NSN 5925-01-064-2388
NSN 5975-01-466-3379
NSN 5945-00-740-7159
NSN 6220-00-553-8938
NSN 6620-00-758-0797
NSN 4140-01-415-6013
NSN 5960-01-085-0604