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 6130-00-307-5782
NSN 5975-01-312-5552
NSN 5910-01-028-0424
NSN 5965-00-113-9748
NSN 6685-00-618-3519
NSN 6150-01-421-9932
NSN 5910-01-435-4562
NSN 6145-00-752-2038
NSN 5905-01-093-1554
NSN 4140-01-133-9011
NSN 5915-01-158-5036
NSN 5835-00-763-2938