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 5999-00-773-3493
NSN 6105-01-106-4157
NSN 6645-00-539-1705
NSN 5990-01-605-4769
NSN 5930-00-909-0993
NSN 6685-00-295-0824
NSN 5925-01-519-3539
NSN 5905-00-501-2871
NSN 5950-01-591-8151
NSN 5920-00-851-9476
NSN 5998-00-145-9429
NSN 5999-01-207-3558