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 4140-00-403-5947
NSN 6150-01-526-8282
NSN 5915-00-299-0192
NSN 6220-01-179-1311
NSN 6610-01-278-8377
NSN 6650-00-518-5194
NSN 6145-00-466-4068
NSN 6220-01-580-5924
NSN 5855-00-294-7532
NSN 4140-00-972-9513
NSN 5975-00-570-7858
NSN 6110-00-123-7953