A tubular shaped unthreaded item with or without a flange at one end designed to be inserted into a hole to reduce the inside diameter of the hole and to protect the surrounding body structure from damage resulting from stress, strain, and/or vibration. The overall length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body. Includes items which are divided into two or more segments which includes 180 degrees (3.141 radians) or less of the bearing periphery. For items made of rubber, see bushing, nonmetallic. See also bearing, sleeve; bushing, tapered; spacer, sleeve; insulator, bushing; and bushing, electrical conductor. Excludes:bushing, drill, jig.
b-52h end item identification, 0.0595 inches minimum and 0.0645 inches maximum flange width, 0.5800 inches minimum and 0.6000 inches maximum flange outside diameter, 0.4700 inches minimum and 0.4710 inches maximum body outside diameter, 0.3198 inches minimum and 0.3204 inches maximum body inside diameter