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 5855-01-275-3111
NSN 5930-01-461-2644
NSN 6610-01-581-0909
NSN 5915-01-449-1731
NSN 5999-01-454-0658
NSN 6150-01-406-2969
NSN 5920-01-349-3488
NSN 5998-00-288-5533
NSN 5960-01-370-4285
NSN 6645-01-245-8390
NSN 5999-01-634-0576
NSN 5855-01-278-8922