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.
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Portugal 
Denmark 
Turkey Classification: Thrust ball bearings
NSN 5935-01-630-5556
NSN 7035-01-351-4111
NSN 6320-01-643-0850
NSN 6620-00-018-2196
NSN 5855-00-631-4565
NSN 5960-00-192-4503
NSN 5920-01-500-5858
NSN 6645-00-679-8203
NSN 5985-00-103-6340
NSN 2925-01-280-1911
NSN 6110-01-201-1939
NSN 5895-01-546-7927