How to set the connection of the thread in a helix structure

Hi All,

I need to set a model that is a helix structure for electromechanical simulations. There is no distance between each thread of the solenoid, which means each thread is connected at the tangent part. I don't want to make the thread slip when I apply the voltage potential. How to do that? How to make the thread connect one by one solidly?

Thank you sincerely.