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 5915-01-609-8605
NSN 2925-00-231-8041
NSN 5999-00-296-7738
NSN 5960-00-950-3595
NSN 6220-00-465-2925
NSN 6620-01-363-8362
NSN 5975-00-023-8987
NSN 6220-01-070-2772
NSN 4140-01-582-7022
NSN 5855-01-490-5384
NSN 6105-00-395-1374
NSN 5998-01-453-7385