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 5920-01-204-0449
NSN 6320-01-157-9076
NSN 6145-00-230-5268
NSN 6105-01-577-5310
NSN 5915-01-239-2073
NSN 6610-00-455-3979
NSN 5950-01-048-9764
NSN 6320-00-731-6134
NSN 5965-00-504-6753
NSN 4140-00-415-6513
NSN 5835-00-589-6300
NSN 2925-01-338-1687