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 5920-01-058-1252
NSN 6105-01-387-8294
NSN 6645-01-578-6815
NSN 6150-01-168-7926
NSN 5996-00-944-6571
NSN 5905-00-137-1490
NSN 6130-01-044-9496
NSN 6145-01-343-2717
NSN 5985-01-612-2410
NSN 5965-00-513-1352
NSN 5998-01-353-7928
NSN 5920-00-965-7031