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 5996-01-194-5249
NSN 7035-01-386-3004
NSN 4140-01-421-1132
NSN 5925-01-018-1375
NSN 5915-01-581-3899
NSN 5999-00-851-4837
NSN 5950-01-435-3387
NSN 5999-01-204-2875
NSN 5935-00-833-3039
NSN 5985-00-310-3002
NSN 5930-00-577-4073
NSN 5945-01-374-1828