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 6650-01-319-3923
NSN 5920-00-753-5113
NSN 2925-01-336-8019
NSN 5975-00-167-4898
NSN 5835-01-439-0180
NSN 5920-00-008-7134
NSN 5910-00-309-2353
NSN 5920-01-332-6414
NSN 5935-01-138-4346
NSN 2925-01-091-4734
NSN 4140-01-446-3525
NSN 6685-00-253-9997