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 6645-00-116-1409
NSN 6240-00-883-1731
NSN 5990-00-801-4375
NSN 5855-01-154-3871
NSN 6135-01-041-3829
NSN 6620-01-183-5329
NSN 5905-00-503-3643
NSN 5965-01-332-1931
NSN 2925-00-709-8754
NSN 6105-01-232-0891
NSN 5835-01-511-5337
NSN 5895-00-147-0042