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 5930-00-462-3340
NSN 5985-00-161-2723
NSN 6240-01-100-4158
NSN 5950-00-161-4419
NSN 5855-01-136-9532
NSN 5935-01-365-0886
NSN 5910-01-475-5478
NSN 5998-01-398-2788
NSN 5998-00-018-8565
NSN 5990-00-761-1698
NSN 6110-00-455-2348
NSN 5996-00-192-3597