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 5925-01-043-4340
NSN 5835-01-495-0595
NSN 5998-01-339-7554
NSN 5935-00-100-1147
NSN 4140-01-255-3496
NSN 4140-01-072-8326
NSN 2925-01-004-5627
NSN 6240-01-270-2915
NSN 6650-01-353-3105
NSN 7035-01-013-0934
NSN 6320-01-322-8340
NSN 6620-01-295-5341