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 6240-01-184-6831
NSN 5905-01-435-6227
NSN 5895-01-641-9159
NSN 5975-00-403-4983
NSN 5990-00-827-0684
NSN 6650-00-490-2637
NSN 5999-00-735-9865
NSN 5965-00-739-2063
NSN 5930-01-225-8942
NSN 6150-01-451-2319
NSN 5935-00-817-3843
NSN 5935-00-453-8699