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 5920-01-619-0147
NSN 6610-01-359-5515
NSN 5895-00-468-2239
NSN 6620-00-286-5721
NSN 6240-00-139-5367
NSN 6105-01-528-8027
NSN 5960-01-182-3676
NSN 5990-01-182-5913
NSN 6105-01-617-0065
NSN 5915-00-130-6562
NSN 5925-01-397-6450
NSN 6610-00-225-9886