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 5930-00-269-4996
NSN 5905-00-229-3897
NSN 4140-00-320-1482
NSN 5985-01-033-9348
NSN 2925-00-989-0523
NSN 6110-01-335-3541
NSN 5920-01-092-6839
NSN 5835-01-232-6904
NSN 5990-01-278-9985
NSN 6135-00-134-6648
NSN 5985-01-320-0389
NSN 6620-01-346-9340