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 5990-00-880-8225
NSN 6320-01-607-1491
NSN 5999-01-323-9468
NSN 6220-00-255-4048
NSN 6110-01-270-4634
NSN 5920-01-381-7691
NSN 5895-01-024-9573
NSN 5950-00-769-0889
NSN 6240-00-734-3276
NSN 6135-01-180-4588
NSN 5930-01-243-3459
NSN 5935-00-281-1237