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 6685-00-342-9408
NSN 4140-00-964-8623
NSN 6320-00-422-1773
NSN 5996-01-012-0972
NSN 5935-01-478-7854
NSN 5935-00-269-5516
NSN 6240-01-089-2656
NSN 5835-00-681-0005
NSN 5905-01-451-4205
NSN 5945-00-819-1131
NSN 4140-01-012-6377
NSN 5935-01-212-9729