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 4140-01-560-3728
NSN 6110-01-650-6867
NSN 6620-01-311-3516
NSN 5998-01-055-8166
NSN 5920-01-293-9134
NSN 5930-00-357-1787
NSN 6240-00-185-8367
NSN 6610-01-023-1812
NSN 5835-01-352-7211
NSN 5835-01-580-0446
NSN 5895-00-443-8821
NSN 6320-01-397-9995