About This

• What You Get: This Bonost 170pcs concrete screws includes 90pcs flat head screws (50pcs 1/4×2-1/4”, 40pcs 1/4×3-1/4”) and 80pcs hex head screws(40pcs 1/4×2-1/4”, 40pcs 1/4×3-1/4”), plus matching drill bits—all organized in a labeled storage case for masonry/concrete installations
• High-quality Material: Made of tempered, high-grade steel, the concrete screws ensure torque and holding power. They also come with a corrosion-resistant coating to enhance their durability and longevity.
• Easy to Use: Drill a pilot hole, insert the brick screw, and tighten it with a screwdriver or drill. Avoid over-tightening to prevent damage to the concrete or attached object.
• Unique Thread Design: The concrete screw features a hi-low thread design for effective concrete cutting and alignment. Its nail-type point guides the anchor into the pre-drilled hole.
• Wide Application: Bonost masonry screws are versatile, suitable for attaching wood or metal framing, brackets, electrical boxes, shelving, and fixtures to concrete or masonry surfaces.

Overview

• Material : High-grade Steel
• Head Style : Flat, Hex
• Item dimensions L x W x H : 11 x 6 x 2.56 inches
• Exterior Finish : Alloy Steel
• Thread Size : 1/4-20 UNC