Screw spike is also called rail screw or sleeper screw, it is used to fix the tie plate or fasten the rail to the sleeper with the help of a plastic dowel.
Generally speaking, screw spikes are mostly used in heavy rail applications, including square-head screw spike, double-head screw spike, hexagon screw spike, Ss series sleeper screw. Screw spikes are also called rail screw, track screw, sleeper screw.