The TIMCO Twin-Threaded Countersunk Silver Woodscrews are traditional twin-thread woodscrews with single lead start for fast installation, primarily used in soft timber applications or masonry with plastic plugs. These screws feature a double countersunk head that reduces the likelihood of head shear and assists completion of countersinking, with 60° twin-threads and parallel shank for faster insertion and greater pull-out resistance. Made from C10-18 steel with surface hardening up to 750 HV to prevent torque shearing under load, they offer consistent quality and improved ductility. The 25° sharp point and single lead design ensures fast start and improved thread acceptance, making them ideal for professional timber construction applications.