Designed for installation in Simpson Strong-Tie ® structural connectors as well as wood-to-wood applications. Type-17 tip for fast starts, no pre-drilling required in most applications. Patented 4CUT 4-corner thread form greatly reduces driving torque. Double barrier coating provides corrosion resistance equivalent to hot-dip galvanization. Head is stamped with the Simpson Strong-Tie No Equal sign and fastener length for easy identification after installation. A low-speed 1/2 " drill with a 3/8 " hex driver is the recommended tool for installation. Code listed under ICC-ES ESR-2236.Simpson Strong Tie Co., Inc.