3/8" x 2-1/2" Concrete Screws, Zinc Plated Large Diameter Concrete Screw for Anchoring to Masonry, Concrete, Brick or Block, 25 PCS (Including One Socket

Specification - Anchor Rod Diameter (Hole Size): 3/8"; Thread Diameter: 1/2"; Length: 2-1/2"; Thread Type: High-Low Thread; Hex Size: 5/8". Package Quantity - 25 PCS Anchors with One Socket Wrench. Materials Performance - The Large Diameter Anchor bodies are made of Class 10.9 Carbon Steel with Zinc Plated surface which provides rust resistance and anti-oxidation; The Anchor features a hex washer head with anti-rotation serrations to prevent the anchor from backing out. Installation - The Anchor requires a pre-drill hole in the base material (Concrete) using a drill bit; Then install the anchor directly using the sleeve supplied. Apply - The large diameter anchors can be used as concrete screws, brick anchors and masonry bolts to provide heavy-duty structural anchoring for indoor and outdoor applications.