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 5999-00-300-7337
NSN 6220-00-511-1769
NSN 5990-01-316-0989
NSN 5915-00-460-5713
NSN 5925-00-518-8503
NSN 5998-01-144-9011
NSN 5985-01-285-2167
NSN 5945-01-045-2023
NSN 6645-00-451-6462
NSN 5855-01-589-0121
NSN 6220-00-971-3342
NSN 6620-00-832-2556