Principles of operation [ edit ] The angle between the plane of contact between tool and fastener and the circumferentially directed force is much closer to 90° in a Torx type of head (lower) than in a conventional hex head (upper). So there you have it, hopefully everything you have ever wanted to know about the Torx T8 screwdriver! Torx Paralobe is a further developed Torx Drive System with 6% longer Flanks which results in a 20% higher applicable torque. This design made improvements on the original which enabled higher torque to be applied while minimising wear. As noted, standard 6 point Torx screwdrivers will not mate with security torx screws due to the additional centre pin in the socket head.

If this radial force component is too great for the material to withstand, it will cause the corners to be rounded off one or both components or will split the sides of the female part. The unique Torx design means that there is less likelihood that the screw head will be stripped or the screwdriver damaged. Other tool manufacturers have been producing 8-, 10- and 12-point star drivers and sockets for many decades. But some manufacturers and resellers head sizes are also abbreviated using "TX" or "Tx" in front of the number.It’s much better if you spend a bit extra on a good quality Torx driver set which will last for a long time to come. Whereas the tendency of Phillips drivers to cam out under excessive torque has been listed as a feature preventing damage to the screw-head or driver, [5] Torx heads were designed to prevent cam-out. It features a second recess to create a "stick-fit" engagement (branded Frixion Fit), designed to minimize wobbling (branded Stable Drive) without pressing and the need for magnetic bits, a feature that can be important to certain industrial users. AW drive is a hexalobular-type screw head similar to Torx, with a tapered profile to aid in centering, developed by the Würth Group in Germany. It’s useful to have a set since it can be very frustrating if you don’t have the right size bit for the screw you are trying to remove!

Torx screwdrivers have a 6-point star shaped pattern and are also commonly known as star screwdrivers or star bits as they let you use torque to screw more than usually possible. Trying to get a security screw to budge with anything else could cause damage to the item, the screw, or even yourself. As with Security Torx screws, it’s important that you use the right type of screwdriver to remove them.However, there’s a good reason why you shouldn’t just rush out to get the cheapest Torx T8 screwdriver possible. Disassembling anything these days requires a variety of different types and sizes of screwdriver bits.

Torx screwdrivers have distinctive 6-point star shaped head which mate perfectly with appropriately sized screw heads. This is sometimes abbreviated in databases and catalogs as 6lobe (starting with the numeral 6, not the capital letter G). This property allows the head of the fastener to be smaller for the same required torque, which can be an advantage in applications where space to accommodate the head is limited.We are all familiar with traditional slot-head screws, which require a flat-bladed screwdriver, and cross-head screws, which might be Phillips or Pozidriv.

Also, let me know if you found this information useful as I may consider creating guides about other types of screws and security screws. A smaller number corresponds to a smaller point-to-point dimension of the screw head (diameter of circle circumscribed on the cross-section of the tip of the screw driver). Or if the head is a bit damaged you can try using a rubber band in-between the screwdriver and the head of the screw. g. an E40 socket is too large to fit a T40 Torx bit, while an E8 Torx socket will fit a T40 Torx bit [6]).Torx (pronounced / t ɔːr k s/) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 [1] by Camcar Textron. A security Torx L-key and fastener with holes for a safety pin to hinder disassembly with an ordinary Torx key.