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 5950-01-174-6049
NSN 6685-01-464-4272
NSN 5915-00-952-1761
NSN 6135-01-084-1609
NSN 6145-01-576-9609
NSN 5998-00-758-2678
NSN 5935-01-365-0256
NSN 5985-00-489-3693
NSN 5950-00-296-5505
NSN 5945-00-141-0160
NSN 4140-01-423-1647
NSN 5990-01-103-2982