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 6220-01-412-3082
NSN 5915-01-520-5929
NSN 6150-01-482-3557
NSN 4140-00-811-2297
NSN 6240-00-764-1580
NSN 5990-01-181-4143
NSN 5985-01-220-2678
NSN 6220-00-051-4198
NSN 5910-01-497-4526
NSN 6110-01-082-3721
NSN 2925-01-612-0405
NSN 6685-01-597-4246