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 6145-01-251-2252
NSN 6130-00-134-8352
NSN 6610-01-594-4543
NSN 6135-01-460-8830
NSN 5835-01-416-6449
NSN 5998-00-033-3274
NSN 7035-00-200-5162
NSN 6240-01-020-9910
NSN 5998-01-134-4886
NSN 5945-00-102-3987
NSN 5925-01-511-0220
NSN 5960-01-511-4423