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 5975-01-550-0136
NSN 5910-00-318-8766
NSN 5945-01-136-1288
NSN 6135-01-472-4533
NSN 5925-00-290-4451
NSN 6135-01-328-6583
NSN 5985-01-141-0875
NSN 5905-01-119-2792
NSN 6135-01-554-8523
NSN 5965-01-233-2759
NSN 5985-00-552-8165
NSN 6620-01-272-4746