Simpson Strong-Tie Screws

Strong-Drive Connector Screws Strong-Drive SD Connector Screws from Simpson Strong-Tie are the only screw tested & approved to replace nails when installing several Strong-Tie Connector types. SD Screws typically exceed load values of nails, meaning a stronger, safer connection. Available in #9 or #10 sizes, 1-1/2" or 2-1/2" lengths. 100 screws per box. Simpson Strong-Tie SD Connector Screws: Class 55 Mechanical Galvanized Meets ASTM B695 Class 55 Heat Treated 100 Screws Per Box #9 Or #10 Size 1-1/2" Or 2-1/2" Lengths 1/4" Hex Head - 1 Hex Driver Included Head ID Stamp For Simple Identification #9 SD Screw Equivalent To 10D Nail #10 SD Screw Equivalent To 16D Nail Designed To Match Holes In Strong-Tie Connectors Made In The USA Covered By Simpson Strong-Tie Limited Warranty