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 6620-01-415-5803
NSN 5975-01-015-5034
NSN 5935-01-466-2482
NSN 5975-01-028-1319
NSN 5990-01-473-4314
NSN 4140-01-040-1700
NSN 6145-01-500-7576
NSN 5998-01-157-1277
NSN 6620-00-092-0871
NSN 5965-01-254-3622
NSN 5930-01-099-9744
NSN 5990-00-606-8299