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 5905-00-313-5484
NSN 5895-01-615-7941
NSN 5945-01-292-4928
NSN 6110-00-891-7099
NSN 6130-00-862-8737
NSN 5985-00-871-5708
NSN 2925-01-139-5144
NSN 6150-01-427-3764
NSN 6110-01-220-4119
NSN 7035-01-196-3445
NSN 7035-01-361-8821
NSN 5925-01-510-2600