TIMCO Solo Chipboard & Woodscrews PZ Double Countersunk 4.0 x 40 Zinc Box of 200

Double countersunk reduces the likelihood of head shear and assists completion of countersinking Wax lubricated to enhance screw insertion time, extra driving torque and resistance to corrosion 40° deep single thread to provide a secure fixing with high pull-out resistance 25° sharp point and single lead for a fast start and improved thread acceptance All sizes up to and including 75mm are fully threaded and lengths 80mm and above all have 70mm thread length, Manufacturer: TIMco