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 7035-00-153-3826
NSN 5998-01-297-8150
NSN 5925-01-378-6857
NSN 6105-01-125-2789
NSN 6610-01-224-7247
NSN 6130-01-611-7669
NSN 5920-00-269-4060
NSN 6240-00-182-7944
NSN 6130-01-515-6274
NSN 5960-00-930-5092
NSN 5895-01-073-5503
NSN 5910-01-604-9958