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 6620-01-651-5425
NSN 6110-01-295-5322
NSN 5910-00-142-5020
NSN 5925-00-969-9986
NSN 6220-01-096-6478
NSN 5945-01-364-8496
NSN 5905-01-464-9183
NSN 5905-01-154-2560
NSN 5975-00-285-0592
NSN 6685-00-891-4164
NSN 5945-00-174-0810
NSN 6135-01-238-2878