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 5915-01-308-3998
NSN 6610-00-325-0485
NSN 6150-01-367-6309
NSN 5905-01-410-8694
NSN 6685-00-198-5789
NSN 5998-01-300-0895
NSN 5905-01-142-2116
NSN 5935-01-210-9156
NSN 5999-00-195-3500
NSN 5950-00-188-9839
NSN 5905-01-460-7739
NSN 6145-01-057-2926