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: Parts of armored fighting vehicles,motorized, whether or not fitted with weapons
NSN 6645-01-492-5304
NSN 5996-01-649-3986
NSN 6650-00-299-9681
NSN 6610-00-256-8006
NSN 6135-01-275-1363
NSN 6645-00-818-9408
NSN 6650-01-573-0616
NSN 5935-00-745-7885
NSN 6320-01-310-8068
NSN 5998-01-032-4164
NSN 5985-01-157-3585
NSN 5920-01-489-6148