[DMCForum] Re: Torx Fasteners (Mike W)

["content22207" <brobertson@xxxxxxxxxxxx>]

I've never had any trouble with Torx in low load applications, such as
holding trim panels. Where they get me is things like tailgate striker
bolts and seat belt holddown bolts. Threads are exposed to the outside
environment and thus can require significant torque to break free.
Torx heads simply can not handle the stress. Head does not snap off
the fastener, but rather the bit eats it out internally.

Bill Robertson
#5939

>--- In DMCForum@xxxxxxxxxxxxxxx, "Mike Walsh" <mike@xxxx> wrote:
> Maybe the reason for Torx is simply a cost savings. Other then flat,
almost
> every kind of screw head has some kind of licensing agreement by the
patent
> holders. It could be that for small, low load screws it's cheaper to use
> Torx then anything else.
> 
> - Mike
> ----- Original Message ----- 
> From: "content22207" <brobertson@xxxx>
> To: <DMCForum@xxxxxxxxxxxxxxx>
> Sent: Saturday, April 02, 2005 6:41 PM
> Subject: [DMCForum] Re: Torx Fasteners (Martin)
> 
> 
> >
> >
> > Yes, I have plenty of Torx tools -- both regular and tamper proof (the
> > ones with the little nipple in the middle). The problem isn't tool
> > supply. The problem is a Torx head can't handle as much torque as an
> > allen head. It certainly can't handle as much as a hex head. If the
> > threads are rusted or frozen, you WILL round the head out. The only
> > advantage then is you have a big centering dimple already in place to
> > drill the head off.
> >
> > Bill Robertson
> > #5939
> >
> > >--- In DMCForum@xxxxxxxxxxxxxxx, Martin Gutkowski <martin@xxxx>
wrote:
> > > content22207 wrote:
> > >
> > > >
> > > > With all due respects, how much security is required for a window
> > > > crank? Or a headlight adjusting screw? Or a side mirror
mounted from
> > > > INSIDE the door?
> > >
> > > WTF are you on about? You need a torx bit set to undo them. OK, not
> > that
> > > hard to get hold of, but certainly not as easy as an allen key.
Citroen
> > > love torx screws FWIW. Hardly any screws inside my car, all held in
> > with
> > > torx.
> > >
> > > >
> > > > I think the idea behind Torx is faster positioning of the
driving bit
> > > > during assembly line production. No thought whatsoever was
given to
> > > > later removal.
> > >
> > > Whatever you reckon mate
> > >
> > > Martin
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >

---

Yahoo! Groups Links

• To visit your group on the web, go to:
  http://groups.yahoo.com/group/DMCForum/
   
• To unsubscribe from this group, send an email to:
  DMCForum-unsubscribe@xxxxxxxxxxxxxxx
   
• Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.