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 5945-01-255-5197
NSN 6145-01-261-5150
NSN 6145-00-008-1834
NSN 5990-01-314-2264
NSN 5960-01-465-6847
NSN 5935-01-500-3478
NSN 5905-01-198-4532
NSN 5998-00-556-2122
NSN 5998-01-386-3123
NSN 6130-01-123-7586
NSN 5998-00-558-2672
NSN 5960-01-599-9821