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 5998-01-369-3005
NSN 5835-01-529-3050
NSN 6610-01-116-2527
NSN 6220-01-449-1239
NSN 6150-00-338-8953
NSN 6135-00-161-0746
NSN 5895-00-007-7114
NSN 7035-01-132-7209
NSN 6685-01-212-2763
NSN 5999-01-578-6070
NSN 5915-01-598-3253
NSN 5925-01-347-7729