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 5965-01-016-1606
NSN 6610-01-246-7563
NSN 5930-01-212-5900
NSN 2925-01-364-7926
NSN 5999-01-141-7721
NSN 6320-01-412-2973
NSN 4140-01-371-8032
NSN 5985-00-176-1499
NSN 4140-01-358-3417
NSN 5945-01-468-1355
NSN 5915-01-380-5534
NSN 5996-01-381-1316