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 6145-01-267-5257
NSN 6320-01-259-2604
NSN 6105-01-502-9273
NSN 6145-01-073-9330
NSN 5905-01-099-9312
NSN 6610-01-061-8466
NSN 5920-00-259-7294
NSN 5998-01-163-0848
NSN 5925-01-012-1890
NSN 5975-01-370-3979
NSN 6610-01-573-5949
NSN 5905-00-554-4325