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 6620-01-076-1340
NSN 5985-01-530-6482
NSN 5915-00-747-9679
NSN 6220-01-365-5606
NSN 5945-00-521-4847
NSN 5998-00-464-1107
NSN 5905-00-833-8072
NSN 6645-00-153-3834
NSN 6610-00-925-5064
NSN 2925-01-660-0669
NSN 5835-00-402-8387
NSN 5998-01-509-4254