3 4 5 acme thread dimensionspdf

I always highly recommend the ThreadKeeper add-in. It will automatically sync your custom thread files whenever there's a Fusion update that moves the ThreadData folder.

ACME threadCalculator

My reference was: https://www.engineersedge.com/hardware/acme-threads-calculator.htm - and I averaged the max and min values for each parameter, as that is what I believe Autodesk had used for their other threads/pitches.

If this answers your question please mark the thread as solved as it can help others find solutions in the future.Marcus Wakefield

Acme threadChart PDF

I've had no problem creating Acme threads of this diameter. but I can't figure out how to change the thread count. Any ideas?

So, I imagined I would want to use a broomstick thread (3/4 x 5TPI), so I ended up modifying my ACMEScrewThreads.xml file and figured I'd post it here, given that this post came up in my search.  I have additionally modified all the acme threads to include the pitch in the description, for clarity when using it in Fusion 360.

You can either replace the ACMEScrenThreads.xml file in your fusion360 Configuration\ThreadData folder, or save it by another name (and change lines 3 and 4 to have a unique title in the fusion threads selector list).  If you overwrite the file, there is a good change that your changes will be overwritten themselves with a future update, so at the very least have a backup.

open /Library/Application\ Support/Autodesk/webdeploy/production/283f47cb0eca637294957ba879067aecb2440930/Libraries/Applications/Fusion/Fusion/Server/Fusion/Configuration/ThreadData/