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 5950-01-408-4273
NSN 5999-01-368-6428
NSN 6645-00-179-8676
NSN 5999-01-375-6691
NSN 4140-01-550-8908
NSN 7035-00-205-1932
NSN 5996-00-589-0552
NSN 5915-01-070-5915
NSN 6645-00-567-4562
NSN 6650-01-056-5418
NSN 5905-01-384-4964
NSN 6105-01-354-7475