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 5920-01-050-7474
NSN 6145-01-357-5648
NSN 5965-00-492-1737
NSN 5950-01-017-0221
NSN 5985-00-272-7451
NSN 5975-01-306-0558
NSN 5855-01-053-9684
NSN 5905-00-406-6651
NSN 5985-01-474-3781
NSN 5910-01-384-2641
NSN 5945-01-271-2144
NSN 5998-00-455-8658