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 2925-01-570-8065
NSN 5835-01-601-4329
NSN 7035-01-384-9257
NSN 6645-01-471-4960
NSN 5930-01-320-6935
NSN 6645-01-529-8822
NSN 6645-01-623-8825
NSN 5999-01-250-5119
NSN 5945-01-475-7728
NSN 6105-01-561-8993
NSN 5990-01-030-4062
NSN 5910-00-144-4383