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 6650-00-313-4172
NSN 5895-00-471-5711
NSN 5905-01-217-5985
NSN 6240-01-188-7282
NSN 5990-01-598-3251
NSN 6685-00-992-7437
NSN 6150-00-874-8672
NSN 6610-01-157-0426
NSN 6220-00-898-3841
NSN 5945-00-381-8043
NSN 5950-01-116-4475
NSN 6610-01-567-2765