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 4140-01-379-4430
NSN 5915-01-100-1028
NSN 6105-00-012-8278
NSN 5910-00-506-6688
NSN 6610-01-387-5630
NSN 6135-01-518-6581
NSN 5950-01-268-1813
NSN 5855-01-549-3243
NSN 4140-01-549-5537
NSN 5920-01-197-2570
NSN 5930-00-182-7617
NSN 5930-01-361-8622