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 6685-01-220-6272
NSN 6150-00-008-1877
NSN 5996-01-428-2807
NSN 5975-00-318-1637
NSN 5996-01-514-5606
NSN 5910-00-388-6737
NSN 4140-01-372-8722
NSN 5835-01-268-1924
NSN 6150-01-610-3451
NSN 5935-01-036-7513
NSN 5990-01-074-6549
NSN 5990-00-503-4162