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 5960-01-449-1310
NSN 5935-01-490-2063
NSN 5905-01-461-0835
NSN 6320-00-731-6134
NSN 5945-00-691-5733
NSN 5920-01-122-6303
NSN 5960-00-951-6293
NSN 5935-01-003-0821
NSN 7035-01-479-1840
NSN 5930-01-137-6542
NSN 6150-00-018-8646
NSN 5990-01-204-7576