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 5985-01-466-4177
NSN 6220-00-032-3340
NSN 6240-01-252-9374
NSN 5835-01-143-9143
NSN 6620-01-365-1499
NSN 6650-01-462-0474
NSN 5985-01-322-6182
NSN 5905-01-570-5808
NSN 6130-00-218-1363
NSN 6320-00-480-7922
NSN 5960-01-382-8772
NSN 5990-01-203-6089