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 6105-00-280-2808
NSN 6150-01-252-7273
NSN 7035-00-391-6345
NSN 5998-00-630-2807
NSN 5935-01-429-2752
NSN 5999-01-284-5688
NSN 5915-01-498-2927
NSN 6220-00-466-2681
NSN 5905-01-027-5206
NSN 4140-00-020-1835
NSN 5998-00-171-2355
NSN 4140-00-888-9836