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 6220-00-502-6380
NSN 6220-01-536-1965
NSN 6105-00-145-2607
NSN 6150-00-286-0827
NSN 6105-01-102-0009
NSN 5999-01-359-5533
NSN 5965-01-542-7842
NSN 2925-00-964-7128
NSN 5855-00-782-7714
NSN 7035-01-368-1070
NSN 5910-00-452-5957
NSN 5950-00-121-9837