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 5905-01-012-6804
NSN 5965-01-012-1065
NSN 5990-01-439-4643
NSN 6135-00-708-0892
NSN 6320-00-646-3311
NSN 6645-01-104-6540
NSN 6240-00-853-3576
NSN 6645-00-539-1705
NSN 6620-00-317-7820
NSN 5990-00-087-6177
NSN 5935-00-299-7149
NSN 5930-01-014-6231