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 6150-00-419-9833
NSN 6150-00-196-7322
NSN 6620-01-541-4465
NSN 6685-01-091-2432
NSN 7035-00-270-5519
NSN 5975-01-109-0511
NSN 5945-01-417-2146
NSN 6130-01-634-0603
NSN 5895-01-067-7957
NSN 4140-00-729-6852
NSN 5920-01-558-8483
NSN 5895-01-464-4341