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 5905-00-935-6954
NSN 5990-01-571-7468
NSN 6240-00-353-5753
NSN 6685-01-605-2959
NSN 6130-00-195-2130
NSN 6240-00-822-4571
NSN 5935-01-064-5898
NSN 6610-01-474-5206
NSN 5925-01-624-8671
NSN 5960-01-426-4242
NSN 5835-01-073-6133
NSN 5915-01-512-1327