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 5935-01-479-3473
NSN 6105-01-322-4613
NSN 6220-00-539-8769
NSN 6105-01-128-1696
NSN 6105-01-176-9930
NSN 5895-00-248-7477
NSN 2925-01-344-0281
NSN 5895-00-706-9451
NSN 5975-01-531-6112
NSN 2925-01-528-7333
NSN 5950-01-196-2095
NSN 5910-01-250-2328