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 4140-00-353-5757
NSN 6110-01-261-0620
NSN 5910-00-276-8592
NSN 6610-00-054-7276
NSN 6650-01-118-2222
NSN 5998-01-477-4913
NSN 5895-01-642-9228
NSN 4140-00-351-7085
NSN 6620-00-992-5876
NSN 5920-01-434-5701
NSN 5925-01-585-3719
NSN 6320-01-506-9439