Rail Bolt and Nut
Rail bolts and nuts are designed to securely fasten rails to sleepers or concrete, ensuring the transfer of axial and radial loads from trains. They are typically made from carbon steel or stainless steel with surface hardness of 300–400 HB and tensile strength of 800–1000 MPa. Bolt diameters range from M16 to M36, with standard lengths from 60 to 250 mm. Threads are produced according to DIN or ISO standards, providing high torque and shear load capacity. Galvanized or epoxy coatings enhance corrosion and wear resistance in railway environments.
Nuts are used with flat, spring, or rubber washers to reduce vibration and loosening. Installation is suitable for urban, industrial, and freight railway lines, with quick on-site replacement. Precise mechanical design increases rail durability, structural stability, and safety. This assembly ensures high strength, stable performance, and reduced maintenance costs.
