These Timco Solo woodscrews are designed for use in timber and man-made boards, or into masonry with a plastic plug. They feature a double-countersunk head to reduce the likelihood of head shear and assist in countersinking. The wax lubrication enhances screw insertion, provides extra driving torque, and offers resistance to corrosion. The screws have a 40° deep single thread for a secure fixing with high pull-out resistance, and a 25° sharp point and single lead for a fast start and improved thread acceptance. Sizes up to 75mm are fully threaded, while lengths 80mm and above have a 70mm thread length. The finish is Zinc & Yellow, with a double countersunk head made of carbon steel. They are fully threaded and require a PZ2 driver bit.