Fish Plate
A fish plate is a high-tensile steel bar used to bridge two rail ends in jointed track construction. Installed in pairs and secured by four or six bolts, they maintain vertical and lateral alignment of the rail head. The design incorporates a specific gap to allow for thermal expansion and contraction, preventing “dipped joints” and ensuring a continuous, smooth running surface for wheel sets. Drawing Number :-T-5916/T-1898 , T-5915/T-O90(M)

Joggled Fish Plate
The Joggled Fish Plate is a specialized evolution of the standard fish plate, characterized by a distinct “arch” or “joggle” in its central section. This unique geometry is engineered to allow the plate to be clamped over a welded joint—specifically a Thermit weld or a Flash Butt weld—that has developed a defect or is under suspicion of failure. The “joggle” provides the necessary clearance so that the plate does not physically touch the protruding weld bead, which would otherwise prevent a flush fit against the rail web. In modern railway safety protocols, joggled fish plates are mandatory for “at-risk” welds in high-speed or high-tonnage territories. They act as a fail-safe mechanism: if the weld were to fail completely, the joggled fish plates would hold the rail ends in alignment, preventing a catastrophic derailment and allowing trains to pass at a restricted speed (Caution Order) until the defective section can be cut out and replaced. They are typically secured using Cclamps or specialized bolts that do not require drilling through the rail, which preserves the structural integrity of the rail section during emergency monitoring periods. Drawing Number :-T-5849 Alt-1 & Alt Nil , T-5848 Alt-1 & Alt-Nil