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 5920-01-306-0110
NSN 5998-01-167-8605
NSN 5895-00-543-2906
NSN 5855-00-151-3853
NSN 5945-01-540-3506
NSN 5998-01-162-0694
NSN 5945-01-024-9378
NSN 5985-01-268-5878
NSN 5945-01-451-2589
NSN 5855-01-546-9423
NSN 5996-01-486-0687
NSN 6135-00-603-4859