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 5925-01-422-4748
NSN 6685-00-891-9304
NSN 5999-01-197-8657
NSN 5990-01-021-7303
NSN 6220-00-361-8338
NSN 5996-01-470-6975
NSN 6610-01-627-8985
NSN 4140-01-448-0733
NSN 5905-01-180-4726
NSN 5925-00-789-3718
NSN 4140-01-573-7247
NSN 5996-01-440-9660