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 5895-01-495-1169
NSN 5960-01-595-6515
NSN 6105-01-425-1718
NSN 6685-01-422-1571
NSN 5950-00-916-0972
NSN 5910-01-293-6999
NSN 6135-01-574-6577
NSN 6645-00-467-6094
NSN 5835-01-349-5420
NSN 2925-01-039-6856
NSN 5960-01-023-8037
NSN 5975-01-634-0678