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 5960-00-233-5488
NSN 5996-01-305-7296
NSN 5999-00-054-6362
NSN 6685-01-265-0634
NSN 2925-01-187-0423
NSN 5910-01-524-3973
NSN 5996-00-597-2234
NSN 5950-00-960-3095
NSN 6135-00-990-1822
NSN 5930-01-087-7075
NSN 6145-01-175-9358
NSN 6220-00-151-9612