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 5835-01-320-8306
NSN 5910-00-412-0785
NSN 4140-00-252-0879
NSN 6610-00-089-6950
NSN 5985-01-579-3450
NSN 5950-00-808-0010
NSN 5920-01-448-0105
NSN 5999-01-220-3060
NSN 6135-01-125-4867
NSN 5999-01-369-6935
NSN 5905-01-529-1562
NSN 6220-01-004-8909