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 6685-01-281-5495
NSN 4140-01-253-0773
NSN 5895-01-472-2476
NSN 5945-00-241-9632
NSN 6610-01-521-9801
NSN 5925-00-804-5814
NSN 5960-00-384-2601
NSN 2925-01-604-8984
NSN 5960-00-581-9719
NSN 6610-00-667-6832
NSN 6130-01-252-9724
NSN 5935-00-862-6660