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 5945-01-290-1480
NSN 5920-00-916-7018
NSN 5950-01-607-0463
NSN 5960-01-259-3846
NSN 5915-01-513-9122
NSN 4140-00-960-8222
NSN 5950-01-292-3426
NSN 5905-00-372-5214
NSN 6610-00-253-7676
NSN 5985-00-194-1559
NSN 5920-00-192-6565
NSN 6320-00-394-8458