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 5998-01-641-8922
NSN 6150-01-506-2544
NSN 6135-01-435-8451
NSN 6645-00-251-0688
NSN 5960-01-342-9965
NSN 6650-01-285-5856
NSN 5998-01-281-7510
NSN 5985-01-629-9651
NSN 6240-00-299-9819
NSN 5855-01-364-1005
NSN 6650-00-111-3399
NSN 5905-00-791-9917