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 6145-00-471-3975
NSN 5996-00-932-3796
NSN 6620-01-417-4081
NSN 5990-01-419-0661
NSN 5965-00-801-1131
NSN 6145-01-099-4742
NSN 5935-00-395-8186
NSN 5925-01-336-6885
NSN 5910-01-062-4806
NSN 6685-00-265-7530
NSN 5990-01-172-4553
NSN 5930-01-444-3869