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 6150-00-418-8498
NSN 6105-01-139-2822
NSN 6650-01-280-3547
NSN 5999-00-186-0058
NSN 5920-00-913-2897
NSN 6135-00-542-6216
NSN 6105-01-378-6604
NSN 5998-01-316-4312
NSN 5925-01-624-3094
NSN 5920-00-007-4245
NSN 5920-00-813-4039
NSN 5960-00-777-4320