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 5975-01-603-3181
NSN 5905-01-229-0613
NSN 5996-00-179-9583
NSN 6105-01-422-2752
NSN 6130-01-026-3519
NSN 6320-01-607-0347
NSN 2925-01-422-1542
NSN 5945-01-047-2795
NSN 6240-01-357-7182
NSN 7035-00-521-6423
NSN 5935-01-085-0592
NSN 6135-00-938-1351