Product & Tools : What's the Advantages of Ledger Lock Screws Ledger Lock Screws Review
Quote from What's the Advantages of Ledger Lock Screws :
Shape head tilted angle for ease of screw heads into the wood. Installation of the screw head should be at least flush with the wood surface or deeper. The most efficient performance is when the screw holes in the wood also follow the shape of the screw head so that the pressure and the resulting tighter bond. Shape of the screw head tilted most often used on wooden furniture. For installation of components, fit or retain temporary stand.