Manual torque wrenches are used in industries and for tasks requiring precise, consistent tightening of nuts and bolts to prevent overtightening or under-tightening, which can cause damage, component failure, or loosening. Key uses include automotive maintenance (e.g., wheel lug nuts, engine parts), construction (structural frameworks), aerospace and manufacturing assembly, and even home projects like bicycle maintenance. The goal is to achieve a specific rotational force for safety and reliability, ensuring fasteners are secure but not stripped or broken.