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 6685-00-089-7311
NSN 6240-00-372-4841
NSN 6130-01-353-4659
NSN 6145-01-181-2808
NSN 7035-01-238-5036
NSN 6135-00-234-6508
NSN 5920-00-557-2647
NSN 5925-01-487-5713
NSN 6240-01-156-1565
NSN 6135-00-162-2437
NSN 5910-00-105-9067
NSN 7035-01-528-7870