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 5960-00-283-6235
NSN 6220-01-500-1857
NSN 5950-01-306-8600
NSN 6240-01-568-2495
NSN 6240-00-287-1988
NSN 5985-00-993-1447
NSN 5930-00-757-4312
NSN 6320-00-731-6134
NSN 5920-01-269-1064
NSN 6685-01-100-3012
NSN 6650-01-136-9194
NSN 6105-01-478-0548