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 5915-01-256-6926
NSN 5990-01-542-4212
NSN 5945-00-328-7300
NSN 7035-01-173-5503
NSN 4140-00-523-0410
NSN 5960-01-499-7172
NSN 5999-00-115-3640
NSN 6130-00-387-2051
NSN 4140-01-339-2829
NSN 5990-01-090-3232
NSN 5990-00-539-7859
NSN 5950-00-975-4409