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 6685-01-449-0933
NSN 6110-01-511-5304
NSN 5960-01-389-9941
NSN 5905-01-232-0836
NSN 6220-01-485-4233
NSN 6145-01-506-0113
NSN 6650-01-170-8242
NSN 5998-00-186-8583
NSN 5950-00-144-3498
NSN 6240-00-127-7874
NSN 4140-00-181-3547
NSN 6145-00-578-7522