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 6320-01-150-5378
NSN 5990-01-598-3251
NSN 6685-01-342-6561
NSN 5950-01-272-0354
NSN 6220-01-406-3167
NSN 5925-01-539-9181
NSN 6150-00-129-9082
NSN 5855-00-177-3529
NSN 6220-00-553-8938
NSN 5855-01-574-3597
NSN 5965-00-452-0967
NSN 6650-01-324-4726