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 6620-01-476-4567
NSN 5855-01-484-3619
NSN 5945-01-081-5478
NSN 5930-00-754-4110
NSN 5975-01-351-6846
NSN 6110-00-239-6337
NSN 5910-01-573-6538
NSN 6620-01-203-7761
NSN 2925-00-105-3907
NSN 5960-00-269-4762
NSN 5990-00-067-6791
NSN 5996-01-151-8720