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 6610-00-704-9754
NSN 6610-01-392-9620
NSN 5905-01-006-2381
NSN 2925-00-156-8963
NSN 5960-01-411-5899
NSN 6130-01-193-7465
NSN 6320-01-056-1164
NSN 5835-01-158-6878
NSN 6610-00-119-7819
NSN 6240-01-644-5022
NSN 6645-01-377-7866
NSN 5915-00-278-5561