Simpson #12 x 2-3/8" Collated TB WOOD-TO-STEEL Screw N2000 1000PkModel No. TBG1260S Coating Material. N2000 Mechanically Galvanized Screw size. #12 Drive Type. #3 Square Length (in.) 2 3 8 Head Diameter (in.) 1 2 Max. Grip Length (in.) 1. 645 Thread Type. Tapping Threads Head Type. Flat Head TPI. 14 Point Type. Drill Point with Wings Point Size. 4 Packaging Qty. 1000 Compatible Tools. Quik Drive PROHSD60, PROHSD60M The TB Wood to Steel screw is designed to work with the Simpson Strong Tie Quik Drive auto feed screw