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 6220-01-463-8520
NSN 5990-00-247-0975
NSN 6135-01-268-7056
NSN 4140-00-779-4876
NSN 5930-01-518-7663
NSN 6150-01-614-5891
NSN 6240-01-593-4728
NSN 5915-01-229-1434
NSN 6320-00-228-5678
NSN 6685-01-659-8427
NSN 5925-01-584-3696
NSN 5895-01-584-0978