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 5925-01-268-1826
NSN 5985-01-056-5179
NSN 5960-01-283-3467
NSN 4140-00-432-5593
NSN 5935-00-619-5543
NSN 6320-01-361-7467
NSN 5895-00-814-8462
NSN 5930-01-319-0562
NSN 6320-01-631-7828
NSN 6135-00-164-8780
NSN 6145-01-246-3112
NSN 4140-00-791-0500