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 6240-01-281-7249
NSN 5935-01-192-6485
NSN 4140-01-316-2217
NSN 6105-01-057-1815
NSN 5910-00-362-6687
NSN 5985-01-385-6632
NSN 6150-01-363-0502
NSN 4140-00-253-1801
NSN 5945-01-568-9483
NSN 6220-01-158-2871
NSN 7035-00-104-7613
NSN 5835-00-280-8494