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 5910-00-231-3569
NSN 5910-00-823-1998
NSN 6220-00-067-7645
NSN 6620-01-051-2045
NSN 5915-01-458-2631
NSN 5990-00-713-9016
NSN 5895-00-493-3114
NSN 5835-00-489-9569
NSN 6130-01-032-4958
NSN 2925-00-433-5429
NSN 6240-01-585-7753
NSN 6105-00-992-5676