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 6620-01-022-4104
NSN 4140-01-480-8634
NSN 5915-01-098-0744
NSN 4140-01-529-6811
NSN 6130-00-557-1583
NSN 5905-01-063-3055
NSN 2925-00-569-2981
NSN 6620-01-381-6225
NSN 6650-01-623-3078
NSN 6610-01-476-7412
NSN 6145-00-170-9415
NSN 5950-00-660-9504