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 5835-01-337-8635
NSN 6685-00-299-8496
NSN 6150-00-620-0484
NSN 5965-00-267-4173
NSN 6240-01-023-7720
NSN 6610-00-299-1844
NSN 6645-01-442-4032
NSN 5905-00-617-5102
NSN 5910-00-936-1978
NSN 4140-01-432-8726
NSN 5910-01-098-3158
NSN 5935-01-017-2226