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 5960-01-360-2117
NSN 5965-00-513-1352
NSN 5975-00-472-7778
NSN 5935-00-909-1831
NSN 5915-01-621-2193
NSN 5985-01-592-8878
NSN 5895-00-062-7960
NSN 5960-01-142-1995
NSN 2925-00-228-4021
NSN 5999-01-622-6622
NSN 5965-01-078-1312
NSN 6685-00-122-4913