How do you  use helicoil insert properly?
 Thread the Helicoil insert onto the supplied installation tool and coat the threaded insert with thread locking fluid. Insert the Helicoil threaded insert into the tapped hole and turn the handle of the insertion tool until the top of the Helicoil rests 1/4 to 1/2 of a turn below the surface of the base metal. Place the tang removal tool into the threaded insert and break the tang from the Helicoil insert to lock it in place. 