SIMPSON 1/4 X 4-1/2 H/D | SIM-SDS25412

Simpson Strong-Tie's Strong-Drive SDS Hex-Head Serrated-Thread Type-17 Point Double-Barrier Coated Wood Screws offer long-lasting performance in harsh environments. The proprietary double-barrier coating provides superior corrosion resistance, making these fasteners well-suited for exterior use and treated lumber applications. They meet ICC-ES ESR-2236 and IAPMO UES ER-192 code requirements, offering added peace of mind in code-compliant installations. Whether you're a professional builder or a serious DIYer, these SDS screws are engineered for ease of use, reduced cam-out, and efficient installation without pre-drilling in most wood types, providing dependable fastening in every project.

• A 0.250 in.-diameter high-strength structural wood screw ideal for various connector installations as well as wood-to-wood and engineered wood applications
• Installs with no pre-drilling 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
• 3/8 in. hex head with 0.500 in. integrated washer
• Head is stamped with the Simpson Strong-Tie "≠" sign and fastener length for easy identification after installation