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 6110-01-219-2692
NSN 6130-01-433-8772
NSN 7035-01-595-5270
NSN 6645-01-381-7104
NSN 5895-00-688-7001
NSN 7035-01-132-7209
NSN 5905-01-043-8042
NSN 6150-01-253-9148
NSN 5965-01-177-3171
NSN 5960-01-506-7039
NSN 5999-00-469-2741
NSN 5920-01-549-1289