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 5935-00-583-3152
NSN 6110-01-322-8585
NSN 4140-01-093-9728
NSN 6320-01-054-3046
NSN 6110-00-962-7858
NSN 6135-01-462-4442
NSN 5975-01-091-7849
NSN 6105-00-916-5614
NSN 6105-00-990-4795
NSN 6110-01-512-5813
NSN 5998-01-323-9561
NSN 5915-01-426-8862