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 5925-01-634-0664
NSN 6130-00-090-9329
NSN 5910-01-060-6481
NSN 6645-01-468-7669
NSN 6320-00-809-5744
NSN 5945-00-873-0854
NSN 5960-01-391-8860
NSN 5935-00-510-1280
NSN 5999-00-219-7493
NSN 5999-01-569-1982
NSN 5855-00-256-5562
NSN 5950-00-266-2511