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 5985-01-574-0012
NSN 6685-00-871-7264
NSN 5960-01-123-3313
NSN 6685-01-356-2989
NSN 6135-01-467-5100
NSN 5945-01-385-7483
NSN 7035-01-145-5059
NSN 5835-00-289-9080
NSN 6105-01-406-8700
NSN 5920-01-532-8280
NSN 4140-01-559-2033
NSN 6685-01-301-3721