Simpson Strong-Tie Strong-Drive No. 3 Sizes X 3-1/2 in. L Star Hex Head Serrated Structural Screws

The Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector screw is a 1/4 in.-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 an easy-driving Type-17 point and a corrosion-resistant double-barrier coating.Designed for installation in Simpson Strong-Tie connectors as well as wood-to-wood applications,Double-barrier coating for exterior and treated-wood applications,Identification stamped into the head with length,Engineer trusted and contractor proven you can trust the quality of Simpson Strong-Tie,A low-speed 1/2 inch drill with a 3/8 inch hex driver is the recommended tool for installation