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 5996-01-350-3345
NSN 5996-01-487-7323
NSN 6685-00-782-7974
NSN 5935-01-449-2717
NSN 6645-01-319-8203
NSN 5910-00-383-1993
NSN 5999-00-135-3520
NSN 4140-01-054-2279
NSN 6105-01-537-0105
NSN 5835-01-191-3405
NSN 6320-00-857-4073
NSN 5990-00-014-2310