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 5895-01-367-2387
NSN 6645-01-416-3749
NSN 5910-00-403-2605
NSN 6620-01-415-5803
NSN 5910-00-932-3024
NSN 5985-01-340-9784
NSN 5990-01-011-0683
NSN 5910-01-607-0879
NSN 5915-01-447-7057
NSN 5920-01-203-6952
NSN 5895-01-040-4591
NSN 5915-01-012-7052