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 5985-01-184-2755
NSN 5910-00-267-9509
NSN 4140-00-499-5730
NSN 6620-01-348-1893
NSN 6130-00-941-8224
NSN 4140-01-451-4657
NSN 7035-00-126-1899
NSN 6610-01-484-8980
NSN 6150-00-468-0752
NSN 6220-00-693-4777
NSN 5915-01-428-2245
NSN 6240-01-219-3384