An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.
Classification: Thrust ball bearings
NSN 4140-00-012-3506
NSN 5965-01-119-8237
NSN 4140-01-631-8844
NSN 5999-01-229-0224
NSN 6645-01-357-9096
NSN 5835-01-174-7700
NSN 5835-01-197-9880
NSN 5996-01-652-2012
NSN 5835-01-119-8561
NSN 5985-00-291-1140
NSN 6150-01-084-6181
NSN 5920-01-270-4562