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 5910-01-377-7184
NSN 4140-01-650-6894
NSN 6150-01-069-2794
NSN 5996-00-113-3620
NSN 6650-00-831-5532
NSN 6220-00-505-1599
NSN 6145-00-253-2787
NSN 5996-01-643-4962
NSN 6320-01-162-5977
NSN 5930-00-938-3192
NSN 5998-00-585-2551
NSN 5915-00-267-2783