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 6240-01-431-3603
NSN 5910-01-141-3819
NSN 6150-00-410-3254
NSN 5996-01-255-0397
NSN 4140-00-078-9357
NSN 5895-01-462-0648
NSN 5915-00-581-9413
NSN 5855-00-013-1244
NSN 5960-01-201-6316
NSN 5920-00-759-1003
NSN 5999-01-055-6571
NSN 5985-01-145-4673