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 5945-01-083-4228
NSN 5985-01-498-9476
NSN 5965-01-020-4104
NSN 5895-01-351-6551
NSN 6320-01-425-1417
NSN 5930-01-340-2439
NSN 6220-00-717-5099
NSN 5915-01-213-3247
NSN 4140-01-424-0841
NSN 5895-01-556-1208
NSN 5990-01-480-9938
NSN 6650-01-529-6721