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 Air Force 
Dept. of the Navy Classification: Parts, nesoi, for roller bearings or for combined ball/roller bearings, nesoi
NSN 5915-01-525-4083
NSN 5835-01-041-8104
NSN 6610-01-356-7471
NSN 4140-01-204-7025
NSN 5920-01-196-8671
NSN 5999-01-574-4372
NSN 6105-01-094-8228
NSN 6320-01-434-3049
NSN 6610-00-113-9176
NSN 5985-00-936-2239
NSN 6145-01-057-4884
NSN 5910-01-502-9833