3/8" X E22 Female Torx Socket - From Deltec Industries - Deltec can manuracture these in deep length / Extra long if required - British Made
- An external Torx version exists, where the screw head has the shape of a Torx screwdriver bit, and a special Torx socket is used to drive it. External Torx heads are found primarily on items like automobile engines and transmissions. However, the external E Torx nominal sizing bears no obvious relation to the T size, e.g. an E40 socket is too large to fit a T40. In fact an E8 female Torx socket will fit a T40 Torx head.
- The Torx design allows for a higher torque to be exerted than a similarly sized conventional hex socket head without damaging the head and/or the tool. The diagram on the right depicts the interaction between the male and female components of a conventional hex drive and a Torx drive. The clearance between the components is exaggerated for clarity.
Torx screws are commonly found on automobiles, motorcycles, bicycle brake systems (disc brakes), hard disk drives, computer systems and consumer electronics. Initially, they were sometimes used in applications requiring tamper resistance, since the drive systems and screwdrivers were not widely available; as drivers became more common, tamper-resistant variants, as described below, were developed. Torx screws are also becoming increasingly popular in construction industries.