The Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector screw is a 1/4 inch-diameter high-strength structural screw ideal for various connector installations as well as wood-to-wood and engineered wood applications. It installs with no predrilling and has been extensively ...The Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector screw is a 1/4 inch-diameter high-strength structural screw ideal for various connector installations as well as wood-to-wood and engineered wood applications. It installs with no predrilling and has been extensively tested in various applications.
The SDS is improved with a patented easy-driving Type-17 point and a corrosion-resistant double-barrier coating.