"M5 Threaded rod is fully threaded along its length. The zinc plating resists corrosion and has a reflective appearance. Threaded rod is a cheap alternative to lead screw and ball screw.
-M5 Threaded Rods are have very small dia (less than 5 mm) hence they will be slightly curved.
-Since due to small dia they can be easily bend during transport. So we limit the length to 850 mm.
-As long as the threads are not damaged, they can be used. minor bends can be straightened."