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 6650-00-840-9758
NSN 6620-00-456-0404
NSN 5930-00-426-6174
NSN 6150-00-407-1386
NSN 6220-01-182-2561
NSN 5910-01-442-6752
NSN 6685-00-555-2810
NSN 6685-00-610-8519
NSN 5905-00-435-9864
NSN 5835-00-413-4701
NSN 5945-00-863-3653
NSN 6135-01-394-4160