Saipor 10pcs Magnetic Pentagon Head Screwdriver Bits Set 1/4 Inch Hex Shank Security Tamper Proof Pentagonal Drive Bit Five-Sided Figure Screw Driver Drill Bit for Electric Hand Screwdrivers, 50mm

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Tork-Nuts". Loss Prevention Fasteners. Ultra Fasteners Inc. Archived from the original on 2015-09-26 . Retrieved 2015-09-25.

ISO 4754-1983(E) Cross recesses for screws" (PDF). Archived from the original (PDF) on April 30, 2023 . Retrieved October 1, 2023.The Pozidriv, sometimes incorrectly spelled "Pozidrive", is an improved version of the Phillips screw drive. It is designated "Type IA" by ANSI standards. [20] and "Type Z" in ISO documents. The Pozidriv was patented by GKN Screws and Fasteners in 1962. [21] [22] It was designed to allow more torque to be applied and greater engagement than Phillips drives. As a result, the Pozidriv is less likely to cam out. [10] [23] [24] It is similar to, and compatible with, the Supadriv screw drive. [25] Machinery's Handbook (PDF) (27thed.). Industrial Press, Inc. 2004. p.1596. Archived from the original (PDF) on 8 September 2017 . Retrieved 8 September 2017. 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. Spanner-Bolts". Loss Prevention Fasteners. Ultra Fasteners Inc. Archived from the original on 2015-09-26 . Retrieved 2015-09-25.

a b c d e f g Rybczynski, Witold (2000). One good turn: a natural history of the screwdriver and the screw. New York [u.a.]: Scribner. ISBN 0-684-86729-X. Unlike JIS, the ISO 4757 standard for cross-head screws does not specify a dot on the screw head. [33] Phillips II [ edit ] 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. 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. Tamper Proof Nuts". Loss Prevention Fasteners. Ultra Fasteners Inc. Archived from the original on 2015-09-26 . Retrieved 2015-09-25.The Recex drive system claims it offers the combined non-slip convenience of a Robertson drive during production assembly and Phillips for after market serviceability. The Phillips Screw Company offers both Phillips and Pozidriv combo heads with Robertson. [ citation needed] Slotted/Torx [ edit ] Fastener Superstore Fastener Guide". Archived from the original on 2017-12-29 . Retrieved 2017-12-28. 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 ] Avsafe". www.losspreventionfasteners.com. Archived from the original on 2017-03-01 . Retrieved 2017-02-28.