A cylindrical item in which the inner or outer ring turns upon row(s) of hardened ball, 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,ball,annular.
0.1234 inches minimum and 0.1250 inches maximum outer ring width, 0.1546 inches minimum and 0.1562 inches maximum inner ring width, f18 e/f end item identification, 0.1873 inches minimum and 0.1875 inches maximum bore diameter, 0.3748 inches minimum and 0.3750 inches maximum overall outside diameter