[Shop-talk] What's the deal with impact torx sockets?

[Donald H Locker]

The spline drive applies the forces from the applied torque more closely
to tangentially to the radius of the spline. More efficient conversion
of driver torque to fastener torque. The wikipedia article has a pretty
good description.

Donald.
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On 2021-05-30 7:17 a.m., eric at megageek.com wrote:
> OK, first, WHY DO THEY USE TORX IN HIGH TORQUE APPLICATIONS?
> 
> These are the WORST fasteners I have ever used. (less flat blade
> screwdrivers.)
> 
> Then, if they are going to use them, why can't they make a Torx impact
> socket set that doesn't twist and brake the first time you use it?
> 
> OK, with that off my chest...
> 
> What is the THE BRAND/SET of torx impact sockets that I can rely on?  At
> this point, price isn't really an issue.  I just want a set that I can
> use in an impact gun and remove a bolt without breaking every time.  I
> would want a complete set of sizes, but it seems that I always break the
> T40 first (it seems to be the most common size.)
> 
> FWIW, my first real injury while turning wrenches was with a Torx over
> 25 years ago.  I was trying to remove a brake component off of a Lumina
> and the bit broke, and the wrench chipped my tooth.
> 
> TO THIS DAY, whenever I have to reach for a torx socket, I still taste
> that broken tooth!  And, I have not found a set of torx that are worth a
> darn.
> 
> So, please help me.  What set do I need?
> 
> Thanks.
> 
> Moose.
> 
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