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 5920-01-563-1597
NSN 5910-01-423-9201
NSN 6645-01-423-7760
NSN 5950-01-463-0433
NSN 5925-01-348-0348
NSN 5960-01-335-1622
NSN 6130-01-283-5764
NSN 5895-00-125-9535
NSN 5925-01-479-4984
NSN 5990-00-683-1095
NSN 6135-00-235-1938
NSN 6645-01-609-7365