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 5905-01-512-8230
NSN 6650-01-447-4631
NSN 5925-00-360-3984
NSN 6620-01-521-9710
NSN 5935-00-385-3635
NSN 5960-01-340-1641
NSN 6105-01-102-2432
NSN 5960-00-692-2887
NSN 6240-00-170-5302
NSN 5990-00-565-6118
NSN 5910-00-111-5060
NSN 6650-01-411-0170