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 4140-01-512-8528
NSN 5990-00-155-2306
NSN 6645-01-512-8472
NSN 5915-00-978-4932
NSN 6220-01-191-5703
NSN 6110-00-950-6065
NSN 5960-00-460-0072
NSN 6145-01-227-5743
NSN 6240-00-170-5302
NSN 5920-00-810-2713
NSN 6150-00-937-0883
NSN 5935-01-535-1369