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 6240-01-383-4695
NSN 5905-00-449-1756
NSN 5965-01-510-9771
NSN 5910-01-298-6484
NSN 5855-01-425-6340
NSN 6645-01-331-5674
NSN 5945-01-597-7568
NSN 5905-01-515-1506
NSN 6150-00-518-4558
NSN 6220-00-932-2500
NSN 5835-01-023-8733
NSN 6620-00-777-3481