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 6685-01-429-0428
NSN 6130-01-504-5821
NSN 6150-01-349-1012
NSN 6320-01-574-1915
NSN 6320-00-089-9426
NSN 5960-01-536-9763
NSN 5950-01-265-5939
NSN 6150-01-568-0662
NSN 5998-00-581-3867
NSN 5925-01-591-2032
NSN 5910-00-574-5753
NSN 4140-01-509-9256