3/16 or 1/4 Concrete Screw Anchor Blue Flat Head Screws for Masonry Brick Block Cement Stucco (Boxed with Drill Bit) CONCRETE SCREWS WITH DRILL BIT : Each box includes 80 high-quality 3/16" x 1-1/4" flat head cement screws along with a 5/32" drill bit for your convenience. EFFORTLESS INSTALLATION : Featuring a unique High-Low thread design, our masonry screws ensure swift and secure fastening on various masonry materials, such as concrete, cement, blocks, and bricks. PREMIUM QUALITY : Crafted from top-notch 1022A carbon steel and treated at high temperatures, our self tapping concrete screws offer exceptional hardness and come with a blue rust-resistant coating for excellent corrosion resistance. CONVENIENT PACKAGING : These brick screws are thoughtfully packed in a high-quality PP box, keeping you organized and ready for on-the-go needs. EXCEPTIONAL SUPPORT : We are fully committed to your satisfaction. If you have any questions about our product or need installation assistance, please don't hesitate to reach out to us via email. Your concerns are our top priority. How to Choose the Right Size Concrete Screws? 1. [Fixture Thickness]Determine the required fixture thickness for anchoring. 2. [Screw Embedment]The recommended embedment depth is 1" to 1-3/4". Use this range to select the right screw (Remember to add the thickness of the fixture). 3. [Hole Size]Hole diameter is crucial for performance and pullout strength. Use a 5/32" bit for 3/16" screws and a 3/16" bit for 1/4" screws. Additionally, ensure the hole is 1/2" deeper than the screw embedment for displaced material. Boxed Concrete Screws with Drill Bit Our boxed concrete screws are thoughtfully packaged with a drill bit for your convenience. The included drill bit ensures a perfect fit for your concrete screws, enabling you to get started quickly and with confidence. _x000D_ _x000D_