Simpson Strong-Tie #12 x 2-1/2" Self-Drilling Screw with Wings, Flat Head - 410 Stainless Steel, Qty. 1,800 LSTHD/STHD Strap-Tie Holdowns (1) Silicone Pipe Boot: A

(1) Silicone Pipe Boot: A flexible

These strips are compatible with most 16 gauge straight finish nailers

Structural Reliability: Engineered and tested to meet performance standards for anchorage and holdown applications

Square-drive recess - reduces cam-out and ensures secure driver engagement

Simpson Strong-Tie #12 x 2-1/2" Self-Drilling Screw with Wings, Flat Head - 410 Stainless Steel, Qty. 1,800 LSTHD/STHD Strap-Tie Holdowns (1) Silicone Pipe Boot: AWhen you need to fasten wood, plywood or fiber cement board directly to steel framing without pre drilling, this Simpson Strong Tie F12C250FDB Self Drilling Flat Head Screw With Wings delivers the performance you expect. Wings create a clearance hole in the top material so the shank will not ride up, then break off as the drill point engages steel. The flat countersunk head offers a clean, flush finish and the full length machine screw threads provide