•Deep recess to prevent 'cam-out', giving a precise and positive drive control on every screw
•Ribs under head for improved countersinking and to give a smooth and flush finish, also prevents splitting and material damage
•Coated with a high-molecular polymer lubricant that reduces the insertion torque by up to 52% and increases rust protection up to 20 times longer than a standard zinc plating
•Dual angle thread for ultimate performance and exceptionally high pull-out resistance
•All sizes up to and including 75mm are fully threaded and lengths 80mm and above all have 70mm thread length