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 6685-01-630-2750
NSN 7035-01-060-3835
NSN 5925-00-521-2527
NSN 5975-01-627-8669
NSN 6150-00-775-4829
NSN 7035-01-167-2241
NSN 5920-01-134-5033
NSN 6150-01-555-7915
NSN 6150-01-189-2566
NSN 5996-00-059-7061
NSN 5910-01-609-7149
NSN 2925-01-359-9818