A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also bushing, sleeve; spacer, sleeve; and washer (as modified). Excludes:pin, hollow.
mil-l-15016, symbol 2190 mil spec single material response lubrication material document and classification, 4.0625 inches minimum and 4.0630 inches maximum body outside diameter, square all corners corner shape, 2.1240 inches minimum and 2.1260 inches maximum overall length, 2.7050 inches minimum and 2.7055 inches maximum body inside diameter