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 6145-01-576-2411
NSN 5996-01-417-3139
NSN 5965-00-904-5694
NSN 6220-01-505-5391
NSN 6220-01-401-5337
NSN 5915-01-578-6153
NSN 7035-01-322-8180
NSN 5985-00-042-3697
NSN 6105-00-376-2174
NSN 6240-01-414-3873
NSN 5990-01-481-8441
NSN 6610-01-286-8685