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 6220-00-133-5170
NSN 5895-00-677-9114
NSN 6650-01-654-0983
NSN 6645-00-258-8547
NSN 7035-01-424-7019
NSN 6145-01-204-7021
NSN 5930-00-916-9206
NSN 5998-01-631-9249
NSN 5998-00-067-3743
NSN 5975-00-443-4660
NSN 5895-01-123-9669
NSN 5945-01-279-1690