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 6320-01-268-3072
NSN 5999-01-016-8795
NSN 5975-00-269-8391
NSN 4140-01-301-1185
NSN 6620-01-030-0525
NSN 2925-00-200-0085
NSN 4140-01-087-7607
NSN 7035-01-423-8343
NSN 6645-00-010-3054
NSN 6620-00-477-0654
NSN 5999-00-615-2924
NSN 6645-01-255-7024