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 5905-01-654-6411
NSN 5985-01-505-2919
NSN 6320-01-392-3531
NSN 5920-01-529-6525
NSN 5950-01-444-4298
NSN 4140-00-526-4505
NSN 5895-01-314-8398
NSN 7035-00-402-4971
NSN 5999-00-240-7388
NSN 5935-00-055-2445
NSN 5945-01-044-5825
NSN 5930-00-182-7617