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 5920-01-174-2579
NSN 5985-01-460-5521
NSN 6650-00-754-2276
NSN 5985-01-461-2012
NSN 6240-01-424-3090
NSN 5998-01-110-9136
NSN 5910-00-146-5774
NSN 5855-00-256-5562
NSN 5975-01-043-1398
NSN 6220-01-123-1353
NSN 5925-01-652-9296
NSN 4140-01-349-1016