Editing Torx (section)

=== Torx Plus ===
[[File:Screw Head - Torx Plus.svg|thumb|upright=0.5|Torx Plus head pattern]]

A Torx successor, '''Torx Plus''', was introduced around 1990 when the original Torx patent was expiring. The Torx Plus patent subsequently expired in 2011.<ref>{{Cite patent |number=US5207132A |title=Elliptical lobed drive system |gdate=1993-05-04 |invent1=Goss |invent2=Seidl |inventor1-first=David |inventor2-first=Richard |url=https://patents.google.com/patent/US5207132A/en/ }}</ref><ref>{{Cite patent |number=CN1048080C |title=有椭圆凸出部的传动装置 |gdate=2000-01-05 |invent1=D·戈斯 |invent2=R·赛德尔 |url=https://patents.google.com/patent/CN1048080C/en/ }}</ref> The lobes are more square to allow for higher torque and to minimize wear. The name is shortened to '''IP''' (Internal Plus) with sizes ranging from 1IP to 100IP <ref name="TORX_PLUS">{{cite web|title=TORX PLUS Drive System|url=http://www.acument.com/pdfs/Catalog_TORX_PLUS_DS.pdf|publisher=Acument|access-date=2013-12-13|archive-date=2020-08-09|archive-url=https://web.archive.org/web/20200809132603/http://www.acument.com/pdfs/Catalog_TORX_PLUS_DS.pdf|url-status=dead}}</ref> (sometimes listed as IP1 to IP100 <ref>{{cite web |url=http://www.wihatools.com/300seri/366_IP_serie.htm |title=TORX PLUS Long arm L-Keys |publisher=Wiha Tools USA |access-date=14 July 2016 |archive-url=https://web.archive.org/web/20151007065658/http://www.wihatools.com/300seri/366_IP_serie.htm |archive-date=7 October 2015 }}</ref>) and '''EP''' (External Plus) with sizes ranging from 1EP to 42EP as well as smaller sizes ranging from H7EP to H2EP and includes five-lobed tamper-resistant variants.<ref name="TORX_PLUS" /> The specifications for these licenses are held by Textron. Standard Torx drivers can be used to drive Torx Plus screws, but not to full torque because of the loose fit. Torx Plus drivers will not fit into standard Torx screws.
* A tamper-resistant version of Torx Plus exists having '''five''' lobes rather than six, plus a solid post in the center, and is used for security as the drivers are uncommon.<ref>{{cite web|url=http://www.instructables.com/id/When-a-Phillips-is-not-a-Phillips-Plus-So-Much-Mor/step70/Torx-Plusreg-Security/|title=When a Phillips is not a Phillips Plus So Much More!|date=16 March 2010|work=[[Instructables]]|first=Egon |last=Pavlis }}</ref> Though Acument (formerly Textron) lists no designation,<ref>{{cite web |title=Fastening Solutions |url=http://www.acument.com/pdfs/Catalog_Fastening_Solutions.pdf |publisher=Acument }}</ref><ref>{{cite web |title=Tamper-Resistant TORX PLUS Drive System |url=http://www.textronfasteningsystems.com/PDFs/TP_tech/Tampresisttorxplus.pdf |publisher=Textron Fastening Systems |archive-url=https://web.archive.org/web/20061110014752/http://www.textronfasteningsystems.com/PDFs/TP_tech/Tampresisttorxplus.pdf |archive-date=2006-11-10 }}</ref> '''TS'''<ref>{{cite web |url=http://www.lasertools.co.uk/item.aspx?cat=1246&item=748 |title=TS Star Bits (5 Sided) 1/4"D 7pc - Part No. 3389 - Part of the TS Star/Torx* Plus range from Laser Tools |access-date=14 July 2016 }}</ref> or '''IPR'''<ref>{{cite web|url=http://www.wihatools.com/700seri/716_IPR_serie.htm |archive-url=https://web.archive.org/web/20151213093852/http://www.wihatools.com/700seri/716_IPR_serie.htm |archive-date=13 December 2015 |title=Security TORX PLUS Insert Bits |publisher=Wiha Tools USA |access-date=14 July 2016 }}</ref> may be seen. The screw may alternatively be a [[Pentalobe]].
* '''Torx Plus Maxx Stems''' is a highly specialized variant used on the ends of fasteners opposite the bolt-head, and provides higher torque than other drive systems allow.<ref>{{Cite web |url=https://www.acument.com/licensing/licensed-products/torx-plus-maxx-drive-system/ |title=TORX PLUS MAXX Drive System |access-date=2018-01-17 |archive-date=2020-08-09 |archive-url=https://web.archive.org/web/20200809160651/https://www.acument.com/licensing/licensed-products/torx-plus-maxx-drive-system/ |url-status=dead }}</ref> Torxstem is a stud with the Torx Plus Maxx drive on both ends.