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 5985-01-242-3920
NSN 5855-00-198-3197
NSN 6610-01-633-2071
NSN 6220-01-163-8775
NSN 5985-01-015-8650
NSN 5835-01-036-4951
NSN 5998-01-527-8489
NSN 6105-01-309-0084
NSN 7035-01-310-2587
NSN 6240-00-187-4306
NSN 5930-01-568-5500
NSN 6645-01-255-0391