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 5998-01-148-7590
NSN 5996-01-383-9308
NSN 5915-01-535-6472
NSN 5855-00-237-4088
NSN 6650-01-141-5999
NSN 5895-01-592-1105
NSN 5930-00-946-1320
NSN 5945-00-646-0823
NSN 5996-00-473-5283
NSN 5920-00-526-9238
NSN 5965-01-140-9446
NSN 6130-01-255-0025