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 6320-01-125-3361
NSN 6685-01-139-4132
NSN 5998-01-167-8541
NSN 4140-01-634-0330
NSN 5990-00-492-5063
NSN 5975-00-144-7878
NSN 6130-01-566-1084
NSN 6135-01-315-9214
NSN 6610-01-226-2347
NSN 5965-01-564-5957
NSN 6135-00-871-3646
NSN 5960-00-407-7705