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The applicable standards that govern the Torq-set geometry are National Aerospace Standard NASM 33781 and NASM 14191 for the ribbed version. The ribbed version is also known as ACR Torq-set. [84] Tri-angle [ edit ] In addition to screw drives, various nut drives have been designed to make removal difficult without specialized tools. Proprietary examples include T-Groove, Slot-Lok, Pentagon, Tork-Nut, T-Slope and Spanner designs. [69] Breakaway head [ edit ]
About Bristol Wrench Spline Drive Bits". 2016-10-21. Archived from the original on 2016-10-21 . Retrieved 2019-11-23. Tri-point Y000 Screwdriver (for Apple Watch and iPhone 7)". iFixit. Archived from the original on 16 October 2021 . Retrieved 28 February 2017. PH) (PZ) ISO 8764 PH drivers [31] are nearly identical to JIS B 1012 drivers. ISO 8764 has superseded JIS B 1012 in Japan as well as being used in many other countries. The standard specifies that drivers and bits are to be marked with a "PH" or "PZ" followed by the size number (000, 00, 0, 1, 2, 3), though not all manufacturers do this. [32]Chart of Torx fasteners and tools". Wiha Tools USA. Archived from the original on 2015-12-26 . Retrieved 2012-01-14. 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 ] Tamper Proof Nuts". Loss Prevention Fasteners. Ultra Fasteners Inc. Archived from the original on 2015-09-26 . Retrieved 2015-09-25. Combo drive". Klien Tools. 3 November 2014. Archived from the original on March 11, 2015 . Retrieved 1 July 2022. Care should be taken not to confuse the name of this pattern with the casual phrase "spline head" which usually refers to the XZN pattern.
Ryder Windham (2006). You Know You're in Rhode Island When...: 101 Quintessential Places, People, Events, Customs, Lingo, and Eats of the Ocean State. Globe Pequot Press. pp.60ff. ISBN 978-0-7627-3940-0. a b Editors (April, May 1913). "Goodwin's Hollow Safety Set Screw" Hardware Dealers' Magazine. pp. 846 V, 865, 1090 As its name indicates these types of screwdrivers are used for tightening or loosening different types of screws. These are available in small as well as larger sizes. Flathead screwdrivers have a handle of wood or plastic fixed to them. Some screws have heads designed to accommodate more than one kind of driver, sometimes referred to as combo-head or combi-head. The most common of these are a combination of a slotted/Phillips head.
ASTER System". www.lisi-aerospace.com (in French). Archived from the original on 2018-06-13 . Retrieved 2018-06-13. a b Thompson, Avery (October 10, 2016). "11 Strange Screws You Don't See Every Day". Popular Mechanics. Archived from the original on August 4, 2020 . Retrieved September 5, 2020. The Phillips Screw Company". phillips-screw.com. Archived from the original on 2021-10-08 . Retrieved 2021-10-07. The 12-spline flange screw drive has twelve splines in the fastener and tool. It consists of 12 equally spaced protrusions, each with a 60° angle. It is achieved overlaying 4 equilateral triangles, each one rotated 30° over the previous one. The spline drive was part of the obsolete, U.S-designed Optimum Metric Fastener System and was defined by ASTM B18.2.7.1M, which was withdrawn in 2011, [81] making the spline drive obsolescent. Pavlis, Egon "arcticpenguin" [pseudonym]. "When a Phillips is not a Phillips Plus So Much More!". Instructables: share what you make. Instructables. Archived from the original on 2012-02-09 . Retrieved 2012-03-11.
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