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 5905-01-524-7929
NSN 5996-01-034-7616
NSN 6320-01-329-2297
NSN 5855-01-561-8944
NSN 6650-00-088-4741
NSN 6620-01-643-6817
NSN 5835-01-414-3258
NSN 5905-00-801-7635
NSN 5998-01-124-7569
NSN 5905-00-712-8629
NSN 5935-01-644-1422
NSN 6620-00-086-5223