Size of Tapered Thread on Cable Release?

TimVermont

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• Oct 4, 2014

• #1

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

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• Oct 4, 2014

• #2

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

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• Oct 5, 2014

• #3

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

 

Ian Grant

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• Oct 5, 2014

• #4

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

 

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TimVermont

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• Oct 16, 2014

• #5

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.