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 6620-00-723-2075
NSN 5965-00-067-0290
NSN 5945-01-166-5239
NSN 5998-00-158-6329
NSN 5920-00-009-2052
NSN 6240-01-470-2450
NSN 6650-00-866-9947
NSN 5945-01-609-4787
NSN 6685-00-107-8085
NSN 5945-01-603-1019
NSN 5910-00-772-7633
NSN 6240-01-384-3887