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 5915-00-177-3460
NSN 5965-00-861-6033
NSN 5990-00-412-0019
NSN 6130-01-487-3708
NSN 5910-00-379-2349
NSN 6645-01-622-6161
NSN 6150-00-647-3285
NSN 5990-00-929-8923
NSN 5965-00-170-5254
NSN 6130-00-591-7988
NSN 6220-01-324-7046
NSN 6610-00-342-0699