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 5985-01-091-3386
NSN 5990-01-322-9781
NSN 6685-01-083-8242
NSN 6240-00-398-0740
NSN 5945-01-383-2693
NSN 5920-01-313-3892
NSN 5950-01-394-4343
NSN 5945-01-391-7993
NSN 4140-00-918-5162
NSN 2925-00-939-1979
NSN 5990-00-195-4352
NSN 6105-01-221-6925