you can solder the threads on one side and then make a z bend on the other. you just need to be able to do fine adjustment to the length on one side. with the threads you use a clevis screwed on to it. also make a keeper to go over the clevis to keep it shut when it is on the servo arm. A keeper is a small piece of fuel tubing that you slip over the clevis to keep it shut during the stresses of flying