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 5925-01-442-8589
NSN 5910-01-542-4476
NSN 5998-01-588-2263
NSN 5925-00-539-8372
NSN 6650-00-989-6991
NSN 6150-01-555-8580
NSN 5985-00-167-9819
NSN 7035-00-946-2642
NSN 5930-01-028-3693
NSN 5855-01-562-3132
NSN 5945-01-501-5487
NSN 5985-00-719-9944