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 4140-01-416-7599
NSN 5999-01-218-4804
NSN 7035-01-406-6510
NSN 6620-01-076-8706
NSN 6130-01-408-5814
NSN 6650-00-527-7451
NSN 5895-00-411-4023
NSN 5895-00-841-1745
NSN 5950-00-203-5621
NSN 5990-01-374-3877
NSN 5920-00-943-4022
NSN 5915-01-549-1506