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 6240-00-422-1278
NSN 6220-01-431-6759
NSN 6645-00-241-3280
NSN 5960-01-541-9884
NSN 6650-01-034-2209
NSN 6105-01-268-5146
NSN 5965-01-278-6877
NSN 5925-00-116-8706
NSN 6320-01-476-0686
NSN 6645-00-664-4665
NSN 5945-00-197-7673
NSN 6240-01-531-4619