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 5910-01-459-8396
NSN 5835-00-469-3395
NSN 6320-00-194-4252
NSN 5935-00-905-6986
NSN 5910-00-521-2053
NSN 5895-00-800-3224
NSN 5915-01-521-8688
NSN 6145-01-609-4051
NSN 6220-01-560-5106
NSN 5905-01-073-3623
NSN 6650-01-384-7867
NSN 4140-00-816-7049