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 6610-00-186-9180
NSN 6620-01-239-3804
NSN 6220-01-020-7873
NSN 6620-01-187-4130
NSN 5960-00-104-5955
NSN 6150-00-123-8840
NSN 4140-01-377-5828
NSN 6320-00-925-0558
NSN 5999-00-816-0255
NSN 5915-01-449-0859
NSN 6320-01-280-5091
NSN 6320-01-227-2648