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 6620-01-578-1984
NSN 6645-01-322-7285
NSN 5910-01-221-1709
NSN 5960-01-522-0391
NSN 6320-00-322-3460
NSN 6105-01-235-7080
NSN 5950-00-087-8989
NSN 6150-01-531-5331
NSN 5905-01-217-7158
NSN 4140-00-547-8918
NSN 6620-01-314-8432
NSN 5835-00-333-6621