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 6650-01-439-6829
NSN 6220-01-408-6890
NSN 6320-00-389-4756
NSN 5905-01-397-8577
NSN 5985-01-010-4081
NSN 5915-01-358-6024
NSN 5965-01-109-2917
NSN 6240-00-635-9953
NSN 5996-01-147-6054
NSN 6105-00-161-1834
NSN 5855-01-130-1501
NSN 6610-01-338-8531