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 5920-01-538-7374
NSN 5855-01-614-1661
NSN 6150-01-530-6728
NSN 6320-00-731-6134
NSN 6650-00-065-7744
NSN 6145-01-151-0238
NSN 7035-00-003-7518
NSN 6105-01-618-2893
NSN 5999-01-502-7023
NSN 5920-01-010-3293
NSN 6145-00-938-6085
NSN 6145-01-322-5520