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 4140-01-273-0196
NSN 5895-00-894-7606
NSN 5990-01-581-5103
NSN 5935-01-277-6994
NSN 2925-01-633-4048
NSN 6130-00-435-6995
NSN 6645-01-645-9117
NSN 5905-00-841-4947
NSN 5895-01-232-0064
NSN 5950-01-378-6705
NSN 5945-01-275-6687
NSN 5925-01-618-4480