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 6685-00-036-2282
NSN 5999-01-456-6581
NSN 6240-00-646-6931
NSN 5975-00-283-3665
NSN 5990-01-056-6413
NSN 5985-00-291-9974
NSN 5835-01-090-0784
NSN 5950-00-288-1812
NSN 5835-01-592-2350
NSN 5905-00-100-2586
NSN 5920-01-327-2574
NSN 5999-01-429-7757