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 4140-00-143-4772
NSN 5920-01-117-6258
NSN 5975-00-552-1764
NSN 5945-00-111-1663
NSN 5996-01-482-2214
NSN 5985-01-579-5006
NSN 5920-01-365-5878
NSN 6130-00-348-1410
NSN 5950-01-088-8881
NSN 5915-00-156-7877
NSN 5915-01-422-5494
NSN 6650-01-633-9147