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 6610-01-010-4516
NSN 6645-00-752-2939
NSN 6105-01-523-3733
NSN 5925-00-186-8669
NSN 5925-01-058-1265
NSN 5965-01-025-5129
NSN 6320-01-611-4918
NSN 5895-01-605-2596
NSN 5985-00-112-9173
NSN 5895-01-364-1017
NSN 5950-01-596-5787
NSN 6610-00-199-8915