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 6645-00-052-7288
NSN 5990-00-250-5205
NSN 4140-01-137-3264
NSN 6135-01-571-0845
NSN 6320-01-260-4301
NSN 5996-00-810-0197
NSN 5950-01-603-3554
NSN 5920-00-189-7497
NSN 5945-00-139-4392
NSN 5935-00-085-2926
NSN 5905-01-462-5965
NSN 2925-01-327-3069