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 5998-01-361-9290
NSN 4140-00-761-7761
NSN 6645-01-219-5911
NSN 6645-01-414-4941
NSN 6145-01-480-3217
NSN 5925-01-274-9349
NSN 2925-01-295-2017
NSN 6110-00-235-6395
NSN 5925-01-503-0394
NSN 5915-00-132-5414
NSN 5855-01-441-1392
NSN 5835-00-148-9719