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 6610-00-133-4508
NSN 6220-01-401-5337
NSN 6220-01-090-0126
NSN 5960-01-415-3574
NSN 5990-01-157-0441
NSN 6240-00-780-6988
NSN 6105-01-371-3045
NSN 5895-00-150-7072
NSN 6135-01-119-0720
NSN 7035-00-205-8739
NSN 5985-00-233-7284
NSN 7035-01-369-1445