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 4140-01-458-0356
NSN 6150-01-348-8225
NSN 5975-01-461-7852
NSN 5920-01-378-8924
NSN 6650-01-083-9706
NSN 6135-00-182-7008
NSN 5975-00-733-5988
NSN 5935-01-139-5075
NSN 5960-00-215-5884
NSN 6650-01-296-0883
NSN 5855-01-100-3272
NSN 5950-01-012-1652