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 5999-00-226-7859
NSN 5999-01-597-1933
NSN 5920-01-338-6167
NSN 5990-01-253-5672
NSN 6685-01-415-5936
NSN 6620-01-201-1327
NSN 5935-01-394-4845
NSN 5895-00-437-4002
NSN 6320-00-139-1090
NSN 5990-01-313-5543
NSN 5998-01-615-7852
NSN 7035-01-281-3642