Track bolts (also called fishplates bolts or railway anchor bolts) are used to fix steel rails or rail tie plates to cement or wooden sleepers, or to fix the connection between rail fishplates and steel rails.
Track bolts are steel bolts that are inserted into the holes of the rail tie plates through threaded rods, and the nuts are embedded in the lower surface of the rail tie plates. The length of track bolts varies according to the different requirements of the railway track section. The diameter and hardness depend on the railway standards of different countries. Common standards for track bolts include ASTM, ASNE, ANSIB, DIN, BS and GB, etc. The surface treatment of Track bolts includes ordinary, black oil, Dacromet, HDG (hot dip galvanized) and zinc dipping.