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 4140-01-056-4453
NSN 6240-01-224-4125
NSN 5935-01-628-3158
NSN 6620-00-709-7389
NSN 6610-01-048-2870
NSN 5930-00-104-1497
NSN 5855-00-408-2611
NSN 5965-01-399-8454
NSN 5855-01-393-0774
NSN 5975-00-500-0166
NSN 6620-00-179-2575
NSN 5996-01-029-2904