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 5998-01-100-3919
NSN 5835-01-385-0579
NSN 5960-00-958-0097
NSN 5855-01-549-8494
NSN 6620-01-545-4259
NSN 6620-01-173-2186
NSN 5985-01-495-0883
NSN 5950-01-424-9446
NSN 6320-00-483-0451
NSN 6220-01-657-0668
NSN 5915-00-962-0358
NSN 2925-01-426-3410