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 5920-01-123-9854
NSN 5950-01-100-3505
NSN 5996-00-799-8838
NSN 5905-01-366-5311
NSN 6110-00-403-9530
NSN 6240-01-394-5320
NSN 5915-01-151-4766
NSN 6220-00-489-1440
NSN 6145-01-389-4350
NSN 5985-01-223-5790
NSN 5915-01-337-0428
NSN 5920-01-074-6865