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 4140-01-462-0268
NSN 6130-01-608-3861
NSN 5910-01-317-2475
NSN 6650-01-388-2538
NSN 5925-00-903-5841
NSN 5950-01-418-4398
NSN 5945-00-794-0015
NSN 5905-01-098-0395
NSN 5985-00-394-5888
NSN 6620-01-337-0652
NSN 5950-01-069-9729
NSN 6105-00-337-0904