The TIMCO Twin-Threaded Countersunk Silver Woodscrews feature a traditional twin-thread design with single lead start for fast installation in soft timber applications or masonry with plastic plugs. These partially threaded screws include a double countersunk head to reduce head shear likelihood, are made from C10-18 steel for consistent quality, and feature surface hardening up to 750 HV to prevent torque shearing under load. The 60° twin-threads with parallel shank provide faster insertion and greater pull-out resistance, while the 25° sharp point ensures fast start and improved thread acceptance.