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 4140-01-554-0886
NSN 5925-01-310-5729
NSN 5895-01-231-8014
NSN 5975-01-613-2784
NSN 7035-01-176-2208
NSN 6220-01-391-5323
NSN 5998-01-628-6115
NSN 5990-00-263-1289
NSN 5920-01-519-2712
NSN 5930-00-648-3296
NSN 5930-01-050-8435
NSN 6130-00-377-0655