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 5999-00-138-5660
NSN 6685-01-452-2368
NSN 6320-00-242-3300
NSN 6220-01-292-7841
NSN 5985-01-011-9571
NSN 2925-00-099-4030
NSN 4140-00-617-0984
NSN 5975-01-620-9769
NSN 5950-01-212-2838
NSN 6150-00-557-1420
NSN 6650-01-573-7165
NSN 5835-00-905-7165