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 5920-01-440-0186
NSN 5915-01-317-6885
NSN 2925-01-384-4139
NSN 2925-00-887-7092
NSN 6135-00-110-1981
NSN 4140-01-076-3720
NSN 6645-01-504-3394
NSN 5835-01-080-7784
NSN 5960-01-580-6360
NSN 5975-01-458-1946
NSN 6645-00-020-2787
NSN 5915-00-247-6513