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 5950-01-239-9885
NSN 5960-01-602-6009
NSN 6320-01-106-4414
NSN 5996-01-415-7724
NSN 5915-01-629-1907
NSN 5960-01-530-0581
NSN 5990-00-459-5752
NSN 5915-01-163-2580
NSN 6240-01-439-4473
NSN 5915-01-472-7169
NSN 6150-01-454-7079
NSN 5910-01-275-9298