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 6320-01-356-5601
NSN 4140-01-552-1885
NSN 6105-01-627-1071
NSN 6150-01-191-5846
NSN 6620-01-187-7267
NSN 7035-00-153-3826
NSN 5905-00-112-2669
NSN 5925-01-353-2766
NSN 6620-01-540-8144
NSN 4140-01-146-5409
NSN 6220-00-916-8327
NSN 5950-01-596-4466