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 5920-01-415-5020
NSN 5915-01-055-4177
NSN 5999-01-139-4275
NSN 5925-01-125-0403
NSN 5945-00-983-5984
NSN 6135-01-066-6904
NSN 5960-01-391-8860
NSN 5925-00-492-7905
NSN 5855-00-962-5792
NSN 6645-00-006-6387
NSN 6610-00-305-5447
NSN 6135-01-329-7994