By the dgn of Right&left handed thread, of course it can be used to adjust the tension of attached cae, so the turnbuckles are not needed in the railing system. And this cae railing wont be easily unfixed or destroyeded.
The lag screws could be drilled into wood to adjust the tightness witt tra turnbuckle or tensioner. Deck and Stair Cae railing system is not only sile but also won't ock your view. Hydraulic crier is needed to connect the cae to lag screws.