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. [4] Torx screws are also becoming increasingly popular in construction industries. Countersunk screws, sometimes denoted by the abbreviation 'CSK', feature an angled countersunk head, which is designed to fit within a countersink. Countersunk screws are designed for use alongside pre-drilled countersunk holes, and are designed to sit flush with the target housing. ‘Countersunk’ is commonly abbreviated to ‘CSK’ in many part numbers and product descriptions. Materials 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. [30] It is available in five sizes: AW10, AW20, AW25, AW30 and AW40. [31] Gallery [ edit ] Find sources: "Torx"– news · newspapers · books · scholar · JSTOR ( March 2013) ( Learn how and when to remove this template message)

Within our standard range of Drive Bits is the popular Torx Bit , featuring a Hexalobular shaped drive that allows for high torque transmission and increased resistance to cam-out. Construction Range Overview (Fasteners: Introducing the AW Drive System, p. 3)" (PDF). Würth New Zealand. 2016.The M2 x 8mm T6 Torx Low Cap Head Screws (ISO 14580) - Stainless Steel (A2) has the following features: AudiTorx is a tamper-proof fastener where a convex and smooth fastener head is topped with a break-away Torx drive that snaps off when the engineered torque is reached, leaving a rivet-like bolt head that cannot be easily removed. The main application for these fasteners is in the railroad industry. [29] External (inverted) Torx [ edit ] External Torx driver Accu's range of Button Torx Screws are manufactured in A2 Stainless Steel and A4 Marine Grade Stainless Steel, with Aluminium, Brass, PEEK and Phosphor Bronze materials also available. Metric Torx Button Head Screws Sharke, Paul (June 2005). "Fast and Secure: how much proof is tamperproof?". Mechanical Engineering. 127 (6): 32. doi: 10.1115/1.2005-JUN-2. ISSN 0025-6501. Archived from the original on 2007-02-09 . Retrieved 2012-01-14. {{ cite journal}}: CS1 maint: bot: original URL status unknown ( link) By design, Torx head screws resist cam out better than Phillips head or slot head screws. [1] 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. The development of better torque-limiting automatic screwdrivers for use in factories allowed this change. 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.

Torx Countersunk Screws feature a hexalobular Torx drive, also known as Star and 6lobe, which prevents cam-out, even under high-torque operation. Torx screws are commonly used for their ability to effectively transmit torque.Technical Information on Fasteners: Design recommendations 11.1 Inside drives for screws – AW drive (AW-Antrieb)" (PDF). Adolf Würth GmbH & Co. KG . Retrieved 2 March 2017. The M2 x 8mm T6 Torx Countersunk Screws (ISO 14581) - Stainless Steel (A2) has the following features: The M2 x 8mm T6 Torx Countersunk Screws (DIN 965) - Stainless Steel (A2) has the following features: