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 6620-01-469-7828
NSN 6145-00-899-2814
NSN 5855-00-149-0766
NSN 6240-00-803-2777
NSN 5920-00-199-9514
NSN 5925-00-629-1974
NSN 5855-01-467-3802
NSN 6685-01-486-7243
NSN 4140-01-125-5187
NSN 5915-01-651-8980
NSN 6620-01-336-6646
NSN 6610-01-555-6654