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 4140-01-436-5184
NSN 6650-00-171-4175
NSN 6610-01-137-5959
NSN 2925-01-218-5556
NSN 5855-01-656-6808
NSN 5985-00-850-8283
NSN 6150-01-210-7709
NSN 6135-01-264-1311
NSN 5965-00-317-1679
NSN 6130-00-224-2059
NSN 5835-00-147-5062
NSN 5945-00-043-1347