Simpson Strong-Tie offers a wide range of fasteners focused on the needs of the professional builder. That means that we focus on features that allow our products to install easier and perform better. We also test them for quality and performance because we know our reputation, and yours, depends on it. 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