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 6105-01-555-8479
NSN 6105-01-071-9406
NSN 5895-00-561-9149
NSN 6220-00-233-7436
NSN 6620-00-932-4306
NSN 6150-01-100-2455
NSN 5975-01-242-6428
NSN 4140-00-893-2754
NSN 6150-01-634-0575
NSN 6150-01-415-0535
NSN 6150-01-171-1118
NSN 6685-01-391-5316