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 6645-01-397-7277
NSN 5975-01-197-7673
NSN 5996-00-225-3286
NSN 5965-01-224-4993
NSN 5905-00-274-3789
NSN 5999-00-249-5002
NSN 5985-00-446-6132
NSN 5910-01-256-6722
NSN 2925-01-577-0004
NSN 6110-01-289-3913
NSN 5905-01-378-2964
NSN 5945-01-100-1873