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 5895-01-580-4418
NSN 2925-01-331-5039
NSN 5915-00-400-5398
NSN 6105-00-127-5033
NSN 5960-00-553-5792
NSN 6320-01-445-5893
NSN 4140-00-707-5963
NSN 6220-01-085-4463
NSN 5910-01-257-8239
NSN 6685-00-269-6444
NSN 6240-01-198-1966
NSN 5855-00-918-1622