![]() The diagram depicts the interaction between the male and female components of a conventional hex drive and a Torx drive. The Torx design allows for a higher torque to be exerted than a similarly sized conventional hex socket head without damaging the head or the tool. ![]() Rather than rely on the tool to slip out of the screw head when a desired torque level is reached (which risks damage to the driver tip, screw head, or workpiece), torque-limiting driver designs achieve a desired torque consistently. The development of better torque-limiting automatic screwdrivers for use in factories allowed this change. 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, Torx heads were designed to prevent cam-out. (Exaggerated for illustrational purposes)īy design, Torx head screws resist cam out better than Phillips head or slot head screws. Principles of operation 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). Torx screws are also becoming increasingly popular in construction industries. 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 commonly found on automobiles, motorcycles, bicycle brake systems ( disc brakes), hard disk drives, computer systems and consumer electronics. Torx Plus, Torx Paralobe and Torx ttap are improved head profiles. This is sometimes abbreviated in databases and catalogs as 6lobe (starting with the numeral 6, not the capital letter G). The official generic name, standardized by the International Organization for Standardization as ISO 10664, is hexalobular internal. ![]() A popular generic name for the drive is star, as in star screwdriver or star bits. 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 by Camcar Textron. A Torx T8 screw head on a hard disk drive. JSTOR ( March 2013) ( Learn how and when to remove this template message)Ī security Torx L-key and fastener with holes for a safety pin to hinder disassembly with an ordinary Torx key.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.This article needs additional citations for verification. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. Click ‘Customise Cookies’ to decline these cookies, make more detailed choices, or learn more. Third parties use cookies for their purposes of displaying and measuring personalised ads, generating audience insights, and developing and improving products. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. ![]() We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice.
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