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 6110-01-429-2358
NSN 5965-00-351-7460
NSN 5915-01-571-3925
NSN 6645-01-030-8930
NSN 6650-01-168-1659
NSN 6220-00-397-6910
NSN 5920-01-139-5973
NSN 5985-01-413-6660
NSN 5895-01-406-4601
NSN 5855-01-120-7831
NSN 5960-01-155-6839
NSN 6620-01-461-3550