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 5985-01-466-5440
NSN 6135-00-754-8191
NSN 6135-00-583-3966
NSN 5925-00-891-4079
NSN 5930-01-548-7805
NSN 5965-00-289-6280
NSN 4140-00-536-9186
NSN 6105-01-369-0425
NSN 5855-01-054-9014
NSN 5925-01-486-3185
NSN 6220-01-645-2625
NSN 5855-01-539-4296