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 5915-00-100-5239
NSN 5920-01-629-4463
NSN 5930-01-317-1891
NSN 5855-01-410-8979
NSN 5915-01-392-0944
NSN 6620-00-466-2314
NSN 5985-00-873-3182
NSN 5945-01-199-8858
NSN 6320-00-024-1004
NSN 7035-00-455-7666
NSN 5950-01-583-1265
NSN 6130-00-900-1957