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 6320-00-937-5625
NSN 6620-01-385-4362
NSN 5915-00-123-2183
NSN 5985-01-173-3309
NSN 5985-00-073-3759
NSN 4140-01-146-5409
NSN 5950-00-193-3573
NSN 5965-01-495-1170
NSN 5895-00-239-7406
NSN 5985-01-453-5313
NSN 5945-00-022-4392
NSN 6220-01-245-9242