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 6135-00-209-6918
NSN 5895-01-320-9796
NSN 5855-01-218-3735
NSN 6620-01-521-5820
NSN 6645-00-315-9254
NSN 5835-01-219-0586
NSN 5975-01-449-1411
NSN 4140-01-281-0222
NSN 6645-01-400-2119
NSN 6610-01-262-3467
NSN 6240-01-472-2950
NSN 5920-01-068-3135