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 5920-00-471-2548
NSN 6645-01-580-8923
NSN 5835-00-827-1904
NSN 5915-00-104-9960
NSN 6220-01-132-7829
NSN 5855-01-351-6875
NSN 5895-00-904-2640
NSN 5960-01-530-6302
NSN 6110-01-528-4861
NSN 5985-01-141-2285
NSN 5920-01-431-9364
NSN 6610-00-987-9716