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 2925-01-394-1812
NSN 6135-00-491-9864
NSN 6645-00-147-5982
NSN 6650-01-575-1044
NSN 5920-01-353-2487
NSN 5855-01-389-8884
NSN 5905-00-902-1246
NSN 5996-01-406-2845
NSN 5985-00-583-6307
NSN 5950-00-450-0268
NSN 6220-00-539-8769
NSN 5985-01-199-2836