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 5945-00-387-2621
NSN 6240-00-961-8074
NSN 5895-00-286-3788
NSN 4140-01-422-3744
NSN 5950-01-474-5576
NSN 5999-00-188-7973
NSN 5915-01-196-6016
NSN 6220-01-495-3301
NSN 6240-01-229-5712
NSN 5935-01-010-3415
NSN 5945-00-489-7796
NSN 5905-01-076-4599