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 6685-01-382-9932
NSN 5915-01-504-6581
NSN 2925-00-304-1997
NSN 6130-01-256-1035
NSN 5975-00-335-1833
NSN 6685-00-336-3135
NSN 6145-00-766-8437
NSN 4140-01-232-1026
NSN 5999-01-200-0989
NSN 5910-01-581-3527
NSN 6320-01-119-3935
NSN 6685-01-530-3458