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 5915-01-354-4729
NSN 5996-00-588-4952
NSN 5975-00-906-1737
NSN 6610-00-159-1110
NSN 5975-00-686-7605
NSN 5855-01-466-1588
NSN 5996-01-434-6774
NSN 5965-00-532-3284
NSN 5965-00-011-6742
NSN 6645-01-255-9886
NSN 6110-01-181-2382
NSN 5945-01-520-6912