Simpson Strong-Tie TNTBL25314H Titen Turbo, 1/4-in. x 3-1/4-in. Hex-Head Concrete and Masonry Screw, Black, 100-Pack

Simpson Strong-Tie TNTBL25314H Titen Turbo, 1/4-in. x 3-1/4-in. Hex-Head Concrete and Masonry Screw, Black, 100-PackTorque Reduction Channel that traps dust where it cant obstruct the thread action, reducing the likelihood of binding in the hole Code listed in accordance with ICC ES AC193 for concrete applications without cleaning dust from predrilled holes (IAPMO UES ER 712) Serrated screw point for easier starts when fastening wood Matched tolerance bit not required; use a standard ANSI drill bit for installation Zinc plated with a baked on ceramic coating