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 5835-01-064-2165
NSN 5895-00-055-9839
NSN 6685-00-087-6925
NSN 5960-00-240-2001
NSN 5975-01-058-3838
NSN 6650-01-240-2334
NSN 6135-01-066-6904
NSN 5905-01-027-2698
NSN 5965-01-363-5952
NSN 6685-01-100-1071
NSN 5935-01-527-7309
NSN 5910-00-246-3561