I have to bind the lock with that threaded arc with the curved tube, moving the lock in the direction of the black line, so that the tube is perfectly inserted in the arc.
if the lock is free to move only along the direction of the black line you. use the tangent bond by changing the type in internal tangency. otherwise you could put a reference point at the center of the tube and one at the center of the collar and impose the coincidence between the two.
