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 6135-01-387-0754
NSN 5950-00-225-4578
NSN 7035-01-423-1755
NSN 5998-01-569-3599
NSN 6645-01-218-9452
NSN 5915-01-545-5418
NSN 7035-00-631-3782
NSN 6105-01-254-3626
NSN 6685-01-181-6232
NSN 6620-01-224-9331
NSN 2925-01-430-4206
NSN 5920-01-391-5666