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 6240-00-755-6904
NSN 5945-01-647-3839
NSN 4140-00-032-5739
NSN 5960-00-722-6845
NSN 5990-00-269-2226
NSN 6105-01-124-0773
NSN 6220-01-574-8754
NSN 5910-00-938-4852
NSN 6650-00-754-2276
NSN 6645-00-928-7208
NSN 5975-01-575-7809
NSN 5990-01-432-4249