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 6240-01-589-2415
NSN 5999-01-520-3231
NSN 4140-00-772-0122
NSN 6320-00-261-9136
NSN 6610-01-591-1117
NSN 6685-01-253-8747
NSN 5930-00-532-3337
NSN 5960-01-175-9880
NSN 6130-01-417-6303
NSN 5905-01-446-6782
NSN 5925-00-216-4480
NSN 6650-00-078-5773