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 4140-01-192-0497
NSN 6610-01-222-7593
NSN 6110-00-004-1455
NSN 6240-01-409-2465
NSN 5975-00-123-6441
NSN 5996-01-095-8868
NSN 6645-01-572-2722
NSN 6620-01-381-8958
NSN 5996-01-537-6237
NSN 5925-01-096-8000
NSN 5945-01-116-3112
NSN 6105-00-035-8809