Features:

• 40° deep single thread provides a secure fixing with high pull-out resistance
• Double countersunk to reduce the likelihood of head shear and assist with the completion of countersinking
• Single slash to reduce torque and the likelihood of timber splitting when the screw is inserted close to the edge
• The surface is hardened up to 750 HV to prevent torque shearing under load
• The core is hardened up to 450 HV for improved ductility
• Patented lubrication designed to enhance screw insertion time and provide greater