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 5975-01-193-6739
NSN 5950-01-139-4371
NSN 4140-01-005-0154
NSN 6240-01-295-3663
NSN 5998-00-607-9921
NSN 5935-01-187-8055
NSN 5945-01-394-0746
NSN 5855-01-477-9629
NSN 5996-01-323-1500
NSN 5999-01-524-7609
NSN 6105-01-327-3174
NSN 2925-01-079-6229