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 5905-00-778-5669
NSN 2925-01-411-8002
NSN 6645-01-033-5051
NSN 5915-01-014-4837
NSN 6620-00-309-9920
NSN 5910-00-272-9286
NSN 5935-00-447-6069
NSN 6650-01-223-9048
NSN 5975-00-707-6245
NSN 6220-01-545-8663
NSN 5999-00-912-6594
NSN 6320-01-216-1678