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 5910-01-485-1070
NSN 5905-00-286-8564
NSN 5855-01-274-5311
NSN 6240-00-646-6931
NSN 6320-01-317-3663
NSN 5920-00-150-1148
NSN 5945-01-451-0949
NSN 5965-00-194-9875
NSN 6220-01-149-0144
NSN 6610-01-424-0283
NSN 5999-00-018-2286
NSN 5950-01-257-3580