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 5855-01-010-4921
NSN 5910-01-527-0467
NSN 5835-00-179-8451
NSN 5950-00-601-1683
NSN 6240-01-062-1684
NSN 5990-01-164-0220
NSN 5920-01-517-9915
NSN 5930-00-718-3850
NSN 5985-00-091-1122
NSN 6610-01-224-3814
NSN 5915-00-810-0164
NSN 5998-01-406-3924