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 5905-00-391-2377
NSN 6110-00-402-7637
NSN 6685-01-201-9294
NSN 5935-01-049-5840
NSN 6320-01-067-0474
NSN 5960-01-579-9493
NSN 5920-01-485-8534
NSN 6145-00-350-0167
NSN 6650-01-388-2538
NSN 5996-01-389-8609
NSN 6650-00-569-1762
NSN 5915-00-499-9054