A premium multi-material screw featuring the award winning C2 twin-cut technology. The dual angle full thread design ensures maximum pull-out strength on every fixing. Ideal for applications when optimum holding force is required such as hinges, brackets and high load environments. Ribs under head for improved countersinking and to give a smooth and flush finish, also prevents splitting and material damage. Dual angle thread for ultimate performance and exceptionally high pull-out resistance. Patented twin cut technology for rapid "pick-up" and reduces timber splitting. 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. All sizes up to and including 75mm are fully threaded and lengths 80mm and above all have 70mm thread length. Thread Dia. mm: 4.0, Length mm: 25, Thread Length mm: 20, Head Type: Double Countersunk, Recess Type: Pozi, Point Type: Twin-Cut, Driver Bit Size: PZ2, Finish: Zinc & Yellow, Material: Carbon Steel. Size 4.0 x 25 - 1700 Pieces.