A cylindrical item in which the inner or outer ring turns upon row(s) of hardened roller, bearing which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes:bearing,roller,cylindrical.
steel overall material, ams6444 assn std single material response overall material document and classification, 1.6533 inches minimum and 1.6535 inches maximum overall outside diameter, 0.7872 inches minimum and 0.7874 inches maximum bore diameter, 0.4674 inches minimum and 0.4724 inches maximum overall width