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 5915-01-429-9287
NSN 5985-00-483-7798
NSN 5905-01-648-3329
NSN 5965-00-705-1690
NSN 7035-00-908-4933
NSN 6135-01-567-0739
NSN 5895-01-382-6388
NSN 6650-01-659-4609
NSN 5945-01-226-7693
NSN 5996-01-055-8608
NSN 5985-01-020-3641
NSN 6320-01-362-4863