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.
NSN 5920-00-269-6178
NSN 6620-01-220-8579
NSN 5895-01-090-2089
NSN 6130-01-198-7084
NSN 6220-00-393-0681
NSN 6110-01-028-4616
NSN 6145-00-752-2562
NSN 5999-00-538-4342
NSN 5935-00-628-0192
NSN 6220-01-245-6272
NSN 5920-00-887-6493
NSN 5998-01-324-5282