Cage calls this: nylon shouldered washer
A washer, round in shape, and having a centrally located hole. One bearing surface is flat and unbroken, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. 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: Gaskets,washers & other seals
NSN 6220-01-585-1515
NSN 6620-00-820-9616
NSN 5945-00-051-0138
NSN 4140-01-004-8424
NSN 5925-01-296-5360
NSN 5975-01-475-5409
NSN 5930-01-598-9264
NSN 5950-01-089-9860
NSN 5960-01-577-0628
NSN 2925-00-993-7715
NSN 5999-01-007-5886
NSN 4140-01-448-5614