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 6320-01-486-8004
NSN 2925-01-219-9471
NSN 6220-01-580-1499
NSN 2925-01-047-7134
NSN 6645-01-215-7247
NSN 4140-00-914-7949
NSN 5925-00-102-9390
NSN 5975-00-994-9102
NSN 6150-01-208-8239
NSN 6645-01-056-9296
NSN 6320-01-084-8821
NSN 6220-01-445-5544