4.0 x 25 Classic C2 Multi Purpose Csk Tub (x1700 + x1 Bit)

Using the most modern manufacturing methods and design techniques, the C2 is a revolutionary high performance multi-purpose screw. Designed to give ultimate performance in a multitude of materials, the patented twin-cut point gives a consistent and rapid "pick-up" and reduces timber splitting. These unique features coupled with a synthetic lubrication and dual angle thread results in 52% less insertion torque and 43% quicker insertion time. • 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 • Dual angle thread gives an ultimate performance and an 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