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 6105-01-551-1696
NSN 5910-01-392-9226
NSN 5998-01-514-7449
NSN 5895-01-612-5276
NSN 5855-00-832-9341
NSN 5985-00-053-4846
NSN 5998-00-915-3212
NSN 6130-01-089-5467
NSN 5855-01-258-5161
NSN 5985-01-412-0569
NSN 7035-00-834-2090
NSN 5910-01-596-6960