Anti-theft M8x90 half-round wood screw with hexagon socket and security plug for attaching outdoor lights, mailboxes, or larger cast signs.

These security screws are difficult to remove. They have a metal plug that, after tightening the screw, is hammered into the prefabricated hexagon socket insert. This permanently and firmly bonds the plug to the screw head. Removal is only possible by removing the steel from the screw head – and this is difficult. Therefore, they are called anti-theft security screws.