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 5945-00-447-9950
NSN 5855-01-584-4128
NSN 6110-00-935-5351
NSN 6145-00-631-4085
NSN 5935-00-457-9658
NSN 6220-00-471-4011
NSN 6135-01-040-1446
NSN 5855-00-560-0110
NSN 5996-01-322-4838
NSN 6650-00-590-9073
NSN 4140-00-340-1592
NSN 5990-00-020-1048