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.
Dept. of the Navy 
Spain Classification: Parts, nesoi, for roller bearings or for combined ball/roller bearings, nesoi
NSN 5999-00-904-8151
NSN 5950-00-278-4186
NSN 6610-01-475-7915
NSN 5945-00-070-7118
NSN 5990-00-315-9093
NSN 5999-01-270-6060
NSN 6645-00-494-3065
NSN 5945-01-040-7584
NSN 5945-00-499-7237
NSN 5998-01-406-3846
NSN 6240-01-537-3218
NSN 6320-00-098-2858