What are the most common Torx screws?

The most common sizes of Torx screws are T10, T15, and T20. These sizes are commonly used in a variety of applications, including automotive and aerospace manufacturing, as well as in consumer electronics and other household items.

The T10 size is often used in applications where a smaller screw is required, such as in small electronic devices, while the T15 and T20 sizes are commonly used in larger applications, such as automotive engines or heavy machinery.

Other common Torx screw sizes include T25, T30, and T40, which are used in various applications depending on the job's specific requirements.