Simpson Strong Tie SD Structural-Connector Screws are designed to be used with Simpson Connectors for both interior and exterior applications.
1/4-Inch Hex Head drive reduces cam-out for easier installation
Shank is specifically designed to match the fastener holes in Simpson Strong-Tie connectors
Optimized heat treated for strength
Mechanically-galvanized coating meets ASTM B695 class 55
Connectors installed with SD screw code listed under ICC-ES ESR-3096