TORX Screwdrivers

By design, TORX® (or Star Bits) head screws resist cam-out much better than Phillips or slotted screws. Where Phillips heads were designed to cause the driver to cam-out, to prevent over-tightening, TORX heads were designed to prevent it and to achieve a desired torque consistently. TORX screws are commonly found on vehicles, computer systems and consumer electronics, but are also becoming increasingly popular in construction.

TORX head sizes are described using the capital letters "TX" for standard TORX and "TTX" for Security TORX, followed by a number. A smaller number corresponds to a smaller point-to-point dimension of the screw head. Only the proper driver can drive a specific head size without risk of ruining the driver or screw.