Cross-Recess Double Countersunk.
General UseFor general applications into softwoods and various types of hardwood.
FeaturesSurface hardened up to 750 HV to prevent torque shearing under load and a core hardness of up to 450 HV for improved ductility. Plated in zinc 3-5 microns. Made from C10-18 Steel to ensure consistent quality. 25 deg. sharp point and single leading thread for a fast start and improved thread acceptance. 60 deg. Twin-threads with parallel shank for faster insertion and greater pull out resistance. Double Countersunk reduces the likelihood of head shear and assists completion of countersinking.