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 5855-01-486-7538
NSN 5985-01-195-4028
NSN 6130-00-632-9275
NSN 6320-01-512-2031
NSN 6240-01-432-0819
NSN 5945-00-492-3809
NSN 5990-00-926-4324
NSN 6130-01-634-0603
NSN 5925-01-088-6863
NSN 5985-00-714-3840
NSN 5910-01-525-0920
NSN 6130-01-421-2705