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 5910-00-171-3058
NSN 6220-01-106-3215
NSN 6650-01-311-0252
NSN 6220-01-290-6807
NSN 6650-01-145-5173
NSN 6130-01-124-7109
NSN 5855-01-542-9059
NSN 5945-01-115-9737
NSN 5895-00-126-6336
NSN 5950-01-445-6004
NSN 5935-00-959-2826
NSN 5996-01-448-6814