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 5905-00-289-6833
NSN 5990-01-328-9846
NSN 6110-01-147-0656
NSN 6150-01-148-7105
NSN 7035-01-088-6415
NSN 4140-01-250-2600
NSN 5930-00-081-8782
NSN 5965-00-782-8920
NSN 5910-00-841-1729
NSN 5910-01-359-5438
NSN 5960-00-199-6034
NSN 5965-01-448-9585