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 6645-01-422-1374
NSN 5930-01-066-3848
NSN 6145-01-175-5988
NSN 5930-00-258-7450
NSN 6650-00-514-3531
NSN 5930-01-387-4856
NSN 6220-01-180-9617
NSN 5915-01-129-6262
NSN 5975-01-493-5387
NSN 5985-00-615-9766
NSN 6220-01-014-5351
NSN 5999-00-854-5065