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 5925-01-212-7249
NSN 5905-01-453-9462
NSN 5925-01-497-1180
NSN 4140-01-063-0342
NSN 5935-00-521-3368
NSN 4140-01-198-5652
NSN 6650-01-421-5879
NSN 5990-01-400-3299
NSN 5965-00-510-4301
NSN 5920-00-142-9993
NSN 6150-01-541-8182
NSN 4140-01-190-6460