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 5930-01-298-1914
NSN 6145-01-333-2220
NSN 2925-00-519-5292
NSN 6110-00-753-7677
NSN 5999-01-443-2466
NSN 5935-01-253-9064
NSN 5835-01-307-8954
NSN 6650-00-542-9042
NSN 6135-01-019-7687
NSN 5975-00-178-1584
NSN 6105-01-055-2195
NSN 2925-01-320-6512