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 5935-01-513-5815
NSN 4140-00-097-0167
NSN 6610-00-176-5486
NSN 5905-00-700-7403
NSN 5985-01-621-0836
NSN 4140-01-634-0330
NSN 5965-01-485-3501
NSN 6240-01-590-0480
NSN 5999-00-109-6077
NSN 6685-01-487-3988
NSN 6645-01-203-9542
NSN 6320-01-305-5881