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 5945-01-238-0111
NSN 5965-00-482-0913
NSN 5950-01-119-8270
NSN 5999-01-203-1880
NSN 5998-00-251-9174
NSN 5935-00-270-1819
NSN 5990-00-660-8885
NSN 6650-01-615-0788
NSN 5945-00-683-5846
NSN 5910-01-619-0985
NSN 5998-00-679-4001
NSN 5920-01-599-2656