Hi,
Frederick
Wayne is correct I am using Max's latest node editor nodeeditor.v.1.1.2020.07.19.jms
with the extensions from James thread.
If your still having problems let me know and I will send you a copy of my node editor.

Brian
I did not thread the nuts but you can simply boolean a screw from the nut as the hole in the nut are the tapping drill size.

Hope this helps
Barry