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name of star shaped allen key

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name of star shaped allen key

Postby RRalphy » Wed Sep 18, 2013 8:59 pm

Went to take my chainrings off and realized that the back screw requires a star allen key, am I right in thinking these are called torx Allen keys?
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by BNA » Wed Sep 18, 2013 9:01 pm

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Re: name of star shaped allen key

Postby trailgumby » Wed Sep 18, 2013 9:01 pm

RRalphy wrote:Went to take my chainrings off and realized that the back screw requires a star allen key, am I right in thinking these are called torx Allen keys?

Yes, you are right.
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Re: name of star shaped allen key

Postby su-pista » Wed Sep 18, 2013 9:05 pm

Most chainring bolts that are torx require a T30.
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Re: name of star shaped allen key

Postby im_no_pro » Wed Sep 18, 2013 9:08 pm

It's a hexalobular internal head. More commonly referred to as torx.
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Re: name of star shaped allen key

Postby Duck! » Wed Sep 18, 2013 10:55 pm

trailgumby wrote:
RRalphy wrote:Went to take my chainrings off and realized that the back screw requires a star allen key, am I right in thinking these are called torx Allen keys?

Yes, you are right.

Half right. Allen keys are hexagonal, Torx keys are star-shaped (or hexalobular if you prefer). The two names do not combine.
I had a thought, but it got run over as it crossed my mind.
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Re: name of star shaped allen key

Postby Pedaling » Fri Sep 20, 2013 8:54 pm

In the automotive trade they are referred to as Torx bits.

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