The Asec Hinge Security Bolts offer added security to all external doors, especially those with exposed hinge knuckles such as outward opening doors.  Manufactured from hardened steel, the hinge bolts will resist hack-sawing and attempts to remove the door from its frame. Why Hinge Bolts Look at your external doors, if they open outwards, the hinge knuckles are exposed. Exposed hinge knuckles can be tampered with to remove the hinge pins, allowing the doors to be forced off their hinges. So hinge bolts are an absolute must for outward opening doors. Hinge Side Reinforcement ...