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 6150-01-370-5239
NSN 5990-01-203-4075
NSN 6110-01-355-9732
NSN 6610-01-240-6629
NSN 5950-01-512-5740
NSN 5999-00-100-5156
NSN 5945-00-204-8192
NSN 6110-00-876-7906
NSN 5999-00-381-2295
NSN 5945-01-410-7341
NSN 6105-01-246-9908
NSN 5985-01-434-8443