Cam-out is a common problem with Phillips or hex head screws under high torque. Torx bolts solve this with their star-shaped drive design. The six-point contact geometry distributes force evenly, preventing the tool from slipping out and stripping the corners. You see them everywhere on modern European and domestic cars, especially on brake rotors, interior panels, and engine accessories. Always clean out any dirt from the bolt head before inserting your Torx socket. If the socket does not seat deep, it will strip the star teeth.
Mechanic Glossary
Torx Bolt
A bolt featuring a star-shaped six-point socket head, offering superior grip and torque transfer compared to standard hex or Phillips fasteners.
Frequently Asked Questions
They are different names for the same six-point design. Torx is the trademarked name.
No. Hex keys will slip and strip the star corners. Always use the correct Torx bit size.
It indicates the size of the Torx bit, such as T25, T30, or T40. A larger number means a larger tool size.
It is a Torx bolt with a small pin in the center of the star. It requires a hollow-tipped Torx bit to remove.