What tool is used to hold the ground stud from spinning while tightening with the nutrunner?

The tool specifically designed to hold the ground stud from spinning while tightening with the nutrunner is the dog bone wrench. This tool features an oval or elongated design that allows it to grasp the hexagonal head of a stud securely. When you apply a nutrunner to tighten the nut on the stud, the dog bone wrench prevents any rotation of the stud itself, ensuring a proper and secure connection.

Other tools, such as a wrench, pliers, or a screwdriver, may not provide the same level of stability and security. A standard wrench applies force but may not adequately prevent the stud from spinning. Pliers could grip the stud but might not be able to fit correctly in tight spaces or provide enough torque without risking damage to the stud. A screwdriver is not suitable for this application, as it is primarily designed to turn screws, not to secure a stud while another tool is in use. Thus, the dog bone wrench is the most effective choice to achieve the desired result.