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 5920-01-394-5003
NSN 5930-00-200-1351
NSN 5996-01-347-2984
NSN 6105-01-381-2496
NSN 5996-00-825-3107
NSN 5990-01-281-0018
NSN 6130-01-469-6381
NSN 5835-01-128-9331
NSN 6145-01-428-4071
NSN 6110-01-633-9660
NSN 7035-01-113-6492
NSN 5990-00-707-0731