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 5855-00-760-3870
NSN 6620-00-663-8962
NSN 6145-01-105-1235
NSN 6135-01-190-2628
NSN 5960-00-225-6731
NSN 6620-00-186-8220
NSN 6130-00-254-1857
NSN 5965-00-836-2690
NSN 6145-00-054-6744
NSN 5945-00-980-8013
NSN 6105-01-240-7070
NSN 5835-01-238-3381