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 5855-01-396-0258
NSN 2925-01-532-8445
NSN 6110-01-592-0038
NSN 5998-01-449-8323
NSN 7035-00-104-7613
NSN 5945-01-063-5992
NSN 5935-00-857-2917
NSN 4140-01-442-8120
NSN 2925-01-218-5556
NSN 5925-01-602-9311
NSN 5855-01-163-8152
NSN 6150-01-050-7528