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 6645-01-274-7784
NSN 6685-01-569-8896
NSN 5945-00-530-4913
NSN 5965-01-492-5695
NSN 7035-01-442-6993
NSN 6620-00-711-2782
NSN 6105-01-350-3333
NSN 4140-00-408-5830
NSN 5950-00-050-7434
NSN 5996-01-458-6641
NSN 5835-00-647-2104
NSN 6135-00-274-4037