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 2925-01-359-4027
NSN 6110-01-077-1473
NSN 6135-00-299-6918
NSN 6240-01-230-2679
NSN 6150-00-087-7277
NSN 6220-01-545-5479
NSN 5930-01-294-1263
NSN 6240-01-179-4547
NSN 6620-01-413-9243
NSN 6110-01-594-2334
NSN 6240-01-653-1277
NSN 5905-01-226-4193