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 4140-01-117-8772
NSN 6620-00-245-6164
NSN 5965-00-899-0453
NSN 5915-00-345-8957
NSN 5945-01-619-2943
NSN 6110-01-276-0985
NSN 6220-00-635-8818
NSN 5920-01-292-2570
NSN 5925-01-440-9364
NSN 4140-00-902-6934
NSN 6150-01-257-7229
NSN 5945-01-425-2761