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 5935-01-177-9557
NSN 5990-01-563-1554
NSN 5960-01-096-4588
NSN 2925-01-472-4423
NSN 6220-00-581-3858
NSN 5999-01-423-0550
NSN 6620-01-011-0880
NSN 5960-01-449-5726
NSN 5975-00-872-0765
NSN 6650-01-149-3224
NSN 5835-00-811-4554
NSN 6130-00-056-9372