The locking screw with code K 73034 is a seemingly small but essential fastening element designed for securing the casing of the cooling water pump in the Sulzer ZV40/48 engine. Its primary function is to hold the casing parts in position under pressure, vibration, and thermal expansion, preventing any misalignment or leakage. Precision-engineered and built to withstand mechanical stress, this screw contributes directly to the durability and stability of the entire cooling system. Regular inspection and correct torque application are key to ensuring its effectiveness.