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 4140-01-044-3366
NSN 5985-00-269-5388
NSN 5930-01-649-5823
NSN 5925-01-058-1853
NSN 5950-01-421-3169
NSN 5999-01-228-7170
NSN 5905-01-449-3718
NSN 5999-01-065-0455
NSN 5930-00-247-3410
NSN 5895-00-103-7233
NSN 5999-01-350-3956
NSN 6620-01-102-0008