Tightening torque refers to the amount of rotational force applied to a fastener, such as a bolt or nut, to secure it in place. This force is crucial for ensuring that the fastener achieves the desired clamping force, which helps maintain the integrity of the assembly. Proper tightening torque prevents issues like loosening or over-tightening, which can lead to mechanical failure. The correct tightening torque is often specified by manufacturers and can vary based on factors like the material of the fastener and the components being joined. Tools like torque wrenches are commonly used to measure and apply the appropriate torque, ensuring that the assembly is both safe and effective.