Size of Tapered Thread on Cable Release?

[TimVermont]

What is the size of the tapered screw thread at the end of a cable release? Are tapered dies available, or are the threads cut on a lathe? Thanks!

 

[wombat2go]

https://app.box.com/s/tdev9o4tlsa2qaxx57f4
https://app.box.com/s/g6m44tm2943c5q2ygo98

These are the USA (now disused?) and ISO standards.
Note that the USA 50 TPI, 60 degree thread is "same" as ISO 0.5mm pitch
meaning that a thread made to this drawing will engage with a socket made to ISO and vice versa.

 

[AgX]

Those tapered thread has ist own standard. Tap is available at tap manufacturer, but expensive.

 

[Ian Grant]

I regularly tap the release arms of Thornton Pickard roller blind shutters, I use a choice of 2 metric straight taps (not at hand to give the sizes unfortunately). Both allow a cable relaease to be fitted securely and with a good tight fit.

I just took a cable release to a ghardware store and tried them in metric nuts before buying the same size taps.

Ian

 

[TimVermont]

Thanks everyone. With the thread and taper information above I'll try to find the correct size die. I want to save my favorite cable release, which fortunately has both a long barrel to cut new threads on, and generous adjustability for length.