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 5960-01-447-7074
NSN 6685-00-213-8451
NSN 6150-01-199-0621
NSN 6645-00-052-7288
NSN 5915-01-560-0750
NSN 5930-01-413-3457
NSN 5835-01-509-8992
NSN 6610-01-225-0416
NSN 6135-01-592-4139
NSN 5996-01-101-0298
NSN 6610-01-415-1623
NSN 5960-01-641-5493