Most of the time, even if we speak sometimes of "tiges à section carrée".
Silivap, the name (tige, baguette, barre, couvre-joint, tringle, etc) depends on the size of the items and what they are made for.
10 cm long, less then 2 cm large, not cylindric, just flat (3 mm?!) and made of steel i guess, but i'm not sure about that. How difficult you are! Each of those has 2 screws fastening it on a "petit cage". This sounds even more complicated!