These Classic Multi Purpose Screws are designed to consistently perform in hardwood, chipboard, MDF, plastic and thin sheet metal. They have a 25° sharp point, special thread design, lubrication and corrosion resistant plating that are all designed to enhance their performance and holding power. Features of the Classic Multi Purpose Screws Double countersunk reduces the likelihood of head shear and assists completion of countersinking Available in boxes of 200 Patented lubrication, designed to enhance screw insertion time and provides greater resistance to corrosion 40° deep single thread to provide a secure fixing with high pull-out resistance Surface hardened up to 750 HV to prevent torque shearing under load and a core hardness of up to 450 HV for improved ductility All sizes up to and including 75mm are fully threaded and lengths 80mm and above all have 70mm thread length
