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 5925-00-889-4990
NSN 5998-00-480-3494
NSN 5935-01-429-8569
NSN 5985-01-238-9509
NSN 5835-01-143-9143
NSN 5998-01-406-4223
NSN 6685-01-076-3915
NSN 6130-00-621-7997
NSN 6145-01-406-5594
NSN 5999-01-158-4733
NSN 6240-00-871-8798
NSN 5835-00-251-9138