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 6610-00-342-0699
NSN 6130-00-513-3565
NSN 5910-01-279-0009
NSN 5999-00-061-7612
NSN 6145-01-357-5648
NSN 5975-01-451-3728
NSN 6320-00-682-3448
NSN 5895-01-565-2894
NSN 5990-00-074-3056
NSN 6620-01-461-2387
NSN 5960-01-231-2165
NSN 5965-01-442-0490