Australian Cycling Forums - Bicycles Network Australia

by **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?

by **BNA** » Wed Sep 18, 2013 9:01 pm

by **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.

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

Most chainring bolts that are torx require a T30.

by **im_no_pro** » Wed Sep 18, 2013 9:08 pm

It's a hexalobular internal head. More commonly referred to as torx.

by **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.