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 5965-00-106-3195
NSN 6105-01-254-3626
NSN 6130-00-188-7928
NSN 5996-01-212-2605
NSN 5915-01-207-0868
NSN 6320-00-886-9771
NSN 5945-01-285-9116
NSN 5930-01-571-7906
NSN 2925-00-474-4990
NSN 5990-01-384-9747
NSN 6685-01-216-0948
NSN 5998-01-317-4624