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 6130-00-299-6920
NSN 6240-00-247-7358
NSN 5835-01-013-9321
NSN 6130-01-360-4875
NSN 5996-01-562-2370
NSN 5985-00-431-3617
NSN 5990-01-315-3754
NSN 5905-00-752-3323
NSN 6220-01-343-8400
NSN 5895-00-246-4415
NSN 5935-01-613-1340
NSN 5835-01-373-9506