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 5985-01-227-3117
NSN 5990-01-328-9846
NSN 6320-00-731-6134
NSN 5975-01-282-7996
NSN 6110-01-568-6312
NSN 6220-00-333-4568
NSN 5835-01-087-7290
NSN 6240-01-210-4217
NSN 5985-00-548-4167
NSN 5895-01-331-0249
NSN 5930-00-540-0900
NSN 6610-00-863-5403