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 5945-01-314-6598
NSN 5905-00-627-1198
NSN 6135-01-286-9563
NSN 6105-01-361-5410
NSN 6130-00-740-3884
NSN 5950-00-942-7894
NSN 6150-01-618-2677
NSN 5920-00-199-9498
NSN 6110-01-397-8803
NSN 5998-00-144-8211
NSN 5990-01-187-5420
NSN 5835-00-155-1379