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 4140-00-390-2373
NSN 5925-00-011-7011
NSN 5835-01-430-4765
NSN 5950-00-339-4279
NSN 6130-01-539-6640
NSN 5910-00-681-3003
NSN 5945-01-641-4580
NSN 6645-00-114-2678
NSN 5935-01-094-5162
NSN 5935-01-578-7790
NSN 6620-01-415-8550
NSN 6220-01-222-0724