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 5930-00-177-3316
NSN 6645-00-143-1567
NSN 5998-00-149-7104
NSN 6135-00-299-6918
NSN 6650-01-131-8626
NSN 5930-01-470-0465
NSN 5999-00-289-1472
NSN 5930-01-332-6381
NSN 6130-01-164-3319
NSN 5990-01-219-9018
NSN 2925-00-156-0999
NSN 5920-00-753-5113