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 5999-00-315-3805
NSN 6220-00-649-3241
NSN 5895-01-534-3361
NSN 6320-01-624-0193
NSN 6220-01-247-7519
NSN 6650-01-457-6649
NSN 5895-00-753-5349
NSN 5895-00-103-9387
NSN 6320-01-615-7202
NSN 2925-01-600-2309
NSN 5950-01-258-3474
NSN 6220-00-515-6998