Adler, Alexander (1998-05-18). Testing and Understanding Screwdriver Bit Wear (Master's thesis). Virginia Tech. hdl: 10919/36701. While a Phillips screwdriver has slightly tapered flanks, a pointed tip, and rounded corners, a Pozidriv screwdriver has parallel flanks, a blunt tip, and additional smaller ribs at 45° to the main slots. The manufacturing process for Pozidriv screwdriver bits requires a slightly more complex cutter than that for Phillips, however both can be manufactured in four cuts from a tapered blank.

Due to the difficulty of turning these fasteners without specialized (and uncommon) five-point wrenches such as hydrant wrenches, they are commonly used for tamper resistance by public utilities on water meter covers, natural gas valves, electrical cabinets, and fire hydrants. New Bolt Drives FCA to Better Seat Assembly". www.assemblymag.com. Archived from the original on 23 August 2019 . Retrieved 23 August 2019. a b c d e Dougan, Lee. "Aerospace Drive System Finding New Applications". www.phillips-screw.com. Phillips Screw Company . Retrieved 21 September 2022.

Also called BNAE NFL22-070 after its Bureau de normalisation de l'aéronautique et de l'espace standard number. A cross-head screw with a two-step driver design, with the blade diameter stepping up at a distance from the point.

A combination slotted/hex head cap is often used for self-tapping screws for metal, where the hex head enables greater torque during the initial self-tapping installation, while allowing the convenience of a slotted screwdriver to be used for removal and reinsertion.JIS B 1012-1985 ねじ用十字穴 Cross Recesses for Screws". Archived from the original on 2023-03-22 . Retrieved 2023-05-01. a b Editors (April, May 1913). "Goodwin's Hollow Safety Set Screw" Hardware Dealers' Magazine. pp. 846 V, 865, 1090 Means for uniting a screw with a driver". US Patent and Trademark Office. US Government. Archived from the original on 5 March 2016 . Retrieved 28 February 2016.

Phillips Screw Company". Phillips-screw.com. Archived from the original on 2017-05-02 . Retrieved 2017-05-01. a b c d e "screw drive systems". Sizes.com. 2010-12-30. Archived from the original on 2012-03-13 . Retrieved 2012-03-12. The Phillips/square screw drive, also known as the Quadrex, Pozisquare screw drive, is a combination of the Phillips and Robertson screw drives. While a standard Phillips or Robertson tool can be used, there is also a dedicated tool for it that increases the surface area between the tool and the fastener so it can handle more torque. [62] Recex [ edit ]Screwdriver bits". McMaster-Carr catalog (116thed.). p.2806. Archived from the original on 2019-12-14 . Retrieved 2010-06-11. ISO 8764-2:2004(E) Assembly tools for screws and nuts — Screwdrivers for cross-recessed head screws — Part 2: General requirements, lengths of blades and marking of hand-operated screwdrivers" (PDF). Archived (PDF) from the original on 2023-04-30 . Retrieved 2023-05-01. a b c "Unterschied zwischen Pozidrive und Superdrive"[Difference between Pozidriv and Supadriv] (in German). Goedkopeschroevenkopen.nl. Archived from the original on February 22, 2014 . Retrieved 2014-03-20. Pozidriv and Phillips appear broadly interchangeable, but may cause damage if incorrectly used. Pozidriv screwdrivers will jam fit into Phillips screws, but when tightened they may slip or tear out the Phillips screw head. Conversely, while Phillips screwdrivers will loosely fit and turn Pozidriv screws, they will cam out if enough torque is applied, potentially damaging the screw head or screwdriver. [10] [23] Supadriv [ edit ] Combo drive". Klien Tools. 3 November 2014. Archived from the original on March 11, 2015 . Retrieved 1 July 2022.