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 5999-00-469-5576
NSN 6145-00-921-7990
NSN 6220-01-655-3241
NSN 5999-01-167-7936
NSN 5855-01-385-8846
NSN 5998-00-934-9023
NSN 6150-01-496-1916
NSN 5925-01-309-2366
NSN 5985-01-408-6427
NSN 5930-01-198-2069
NSN 6240-01-154-6840
NSN 6220-01-560-2369