Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:1985768.

I also had problems with the wider threads on the pipes from aliexpress. Unfortunately I already printed 10 of this sockets before receiving the items from China. I didn't recognise that there was a remix for wider threads online meanwhile and that a drawing file for this socket is available. So I designed a new one with FreeCAD and OpenSCAD using the thread tool by mike_mattala http://www.thingiverse.com/thing:193647 . If your pipe-threads have an outer diameter of 12.8 mm you can use these sockets.