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 5985-01-400-0882
NSN 5910-01-570-5510
NSN 5855-00-477-9943
NSN 5945-01-391-9016
NSN 5920-01-252-5562
NSN 5930-01-460-0422
NSN 6130-00-660-8848
NSN 6645-00-073-9949
NSN 5895-01-553-3601
NSN 5960-01-350-5332
NSN 4140-01-442-1670
NSN 5998-01-260-3544