This is an archive of past discussions about Torx. Do not edit the contents of this page. If you wish to start a new discussion or revive an old one, please do so on the current talk page.

Würth AW, SIT, ASSY

Wurth has torx-derived design that they call as AW. It's used in their ASSY screws, that include some other unrelated inventions too. They seem to call their current screw design as "ASSY 3". I guess there has been revisions on it. I'm not sure whether they have changed that AW head for a while, thought. I'm guessing that relevant patent is US5435680 from 1995.

Other manufacturers (Wera, CELO) seem to offer drivers with "SIT" head, that are supposed to be licensed from Wurth and designed for ASSY screws. So it looks like that SIT=AW, or is it? SIT screw is supposed to be able to be driven with regular torx, albeit with imperfect fit, see http://celofasteners.com/en/Technology/licensed-products.php?item=263 . Is this properly documented anywhere? Any insight? — Preceding unsigned comment added by Jesh (talk • contribs) 22:32, 4 January 2013 (UTC)

Pronounciation

Is torx properly pronounced "torks" so that it rhymes with "forks" or is it pronounced "torrex" or "torr-X"? And while we're on the topic, is the "driv" in pozidriv pronounced as "drive"? 203.122.103.131 (talk) 10:52, 6 March 2008 (UTC)

>Is torx properly pronounced "torks" so that it rhymes with "forks"[?]

Yes, correct.

>is the "driv" in pozidriv pronounced as "drive"?

Yup.

— ¾-10 00:33, 7 March 2008 (UTC)

Inch vs. Metric==

There are dimensional discrepency's on the Whiha charts between inch and metric. Some large enough to prevent interchange. I currently have equipment that should take T6 per instructions, however a T6 is too small, T8 too large. What's up with that? Per the article, Torx should have only one specification to avoid the inch vs. metric tool hassles. —Preceding unsigned comment added by 64.199.137.42 (talk • contribs) 18:52, 22 May 2008 (UTC)

It's true: The driver size is independent of threads. You might have some counterfeit ChiCom fasteners or drivers. TORX is still under trademark protection, but since the patent on the original TORX fastener design ran out in 1991, the copycats have been doing who-knows-what to it. It's unlikely that you're dealing with TORX PLUS screws, 'cause the article says a standard TORX fastener will fit them loosely and can drive them.—Quicksilver^{T @} 00:39, 19 May 2010 (UTC)

Point to point ?

There are size tables in the article, and they mention "point to point distance". However, I can't find any definition of this distance, which means the tables are essentially useless. Does anyone have a source for how this distance is defined? 90.227.57.17 (talk) 17:22, 23 December 2013 (UTC)

Isn't it simply the distance across two diametrically opposed points of the star? To confirm that, you could throw a caliper across a handful of males and verify them against the table to see if the numbers correspond (± 10 thou). Until that's done, I don't really see how the tables can be judged as "essentially useless". I would even go caliper some myself, with curiosity piqued by this thread, but I'm working. — ¾-10 22:38, 23 December 2013 (UTC)