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 4140-01-260-8009
NSN 5905-01-331-2777
NSN 5950-00-075-8761
NSN 6645-00-419-9939
NSN 5998-01-455-6668
NSN 5925-01-174-0335
NSN 5965-00-281-0319
NSN 6220-00-232-9706
NSN 5905-00-290-8098
NSN 6645-00-920-1412
NSN 6110-00-287-3235
NSN 5996-01-478-7331