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 5999-01-649-1451
NSN 5910-01-039-6640
NSN 6620-01-355-4339
NSN 5975-00-577-8825
NSN 5999-01-191-0332
NSN 6110-01-438-6677
NSN 5990-01-378-7349
NSN 5990-00-995-6071
NSN 5915-00-083-9552
NSN 5925-00-597-1558
NSN 5920-01-462-1196
NSN 6320-01-652-3806