Simpson Strong-Tie #12 x 1-3/4" Self-Drilling TB Wood-To-Steel Screw, Square Flat Head - Black Phosphate, Qty. 50 Grade 55 Threaded Rod (40) STN22 Hex Head Washers

(40) STN22 Hex Head Washers

The Simpson Strong-Tie F07T300TDM Self-Drilling Siding Screw is designed to deliver strength

helping maintain the structural integrity of pitched roofs

Web Stiffeners are required for all I-joists used with these hangers

Full-Length Machine Threads: Provides maximum engagement in the substrate and consistent load transfer from the panel into the steel backing

Simpson Strong-Tie #12 x 1-3/4" Self-Drilling TB Wood-To-Steel Screw, Square Flat Head - Black Phosphate, Qty. 50 Grade 55 Threaded Rod (40) STN22 Hex Head WashersThe Simpson Strong Tie TBP1245R50 Strong Drive TB Wood to Steel Screw with black phosphate coating is designed for high performance fastening of wood to steel in interior, dry environments. This structural screw features a flat head with under head nibs for clean countersinking, a #4 drill point with wings to eliminate wood splitting, and a 6 lobe recess for controlled driving torque. The black phosphate finish provides smooth driving and a clean