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 5950-01-474-1272
NSN 5975-01-171-5990
NSN 6240-00-422-1278
NSN 4140-01-193-4350
NSN 5950-01-422-1361
NSN 5965-01-378-7335
NSN 4140-01-367-8058
NSN 5996-00-358-6257
NSN 6610-01-359-5515
NSN 5905-00-286-8564
NSN 6610-01-246-4164
NSN 5895-01-462-4503