• Hex head countersunk with a fixed washer
• Long lasting plating withstands up to 1,000 hours salt spray resistance in accordance to BS EN 9227:2013
• Patented lubrication, designed to enhance screw insertion time and provides greater resistance to corrosion
• Helix shank for removing debris and to improve clamping
• 50° deep single thread to provide a secure fixing with high pull-out resistance
• Single slash point to reduce torque and the risk of timber splitting at low edge distance
• 25° sharp point and single lead for a fast start and improved thread acceptance