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 5985-01-560-1889
NSN 5996-01-566-0344
NSN 6145-01-249-7728
NSN 5925-00-690-7568
NSN 5920-01-446-1123
NSN 5910-01-324-3222
NSN 5975-01-559-0822
NSN 6240-00-985-5244
NSN 5996-00-525-1777
NSN 4140-01-469-6140
NSN 6320-00-937-5625
NSN 5930-01-400-6126