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 6645-00-429-0172
NSN 6685-01-350-3451
NSN 6240-00-104-4662
NSN 5930-01-239-2078
NSN 5945-00-935-5266
NSN 5999-00-069-8262
NSN 5835-00-752-6065
NSN 6320-00-270-8222
NSN 5905-01-026-1508
NSN 6645-01-529-8822
NSN 5950-00-389-3760
NSN 6105-01-324-3002