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 5855-01-069-4742
NSN 5975-00-285-8003
NSN 6150-01-207-1170
NSN 6130-01-657-7232
NSN 5998-01-181-9702
NSN 5835-00-943-2763
NSN 5910-00-500-7599
NSN 6220-01-423-8319
NSN 6240-01-013-3370
NSN 5855-01-509-6872
NSN 5945-01-276-4725
NSN 5975-01-206-6316