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 5985-01-381-0218
NSN 5985-01-646-1108
NSN 6650-00-035-9297
NSN 6620-00-765-5794
NSN 7035-00-436-1229
NSN 6110-00-104-8009
NSN 6620-01-540-8144
NSN 5915-01-244-6772
NSN 5905-00-847-6819
NSN 6150-01-514-6984
NSN 6645-01-290-9428
NSN 5985-00-006-2031