What is a torx screw drive design?

Chris

4th March 2020

A torx drive is characterised by a star-shaped recess with 6 rounded points.

Torx drive as viewed from above

A screw with a torx drive is designed to be driven with a torx screwdriver bit. Ensure you select the correct size bit for your screw.

For more information, see section: How to select the correct screwdriver bit for the screw.

Advantages		Disadvantages
Allows the screwdriver bit to sit more securely, so more torque can be applied with less risk of the screwdriver bit slipping out of the screw Could be considered fairly resistant to unwanted removal, as they can only be removed using a torx screwdriver bit, which is less commonly owned, compared with a Phillips or flat-blade bit		Because a torx bit must fit exactly into a torx drive, a bit that is even slightly worn will struggle to turn the screw. As a result, using torx screws may prove costly if you have to keep replacing bits