DIY Frequently Asked Questions / Self-Tapping Concrete Screw
- DIY Frequently Asked Questions / Self-Tapping Concrete Screw')"> Hardened steel screws designed to cut threads in pre-drilled holes.
- Holes can be drilled through the item to be fastened without moving the fixture.
- Head styles are Phillips, flat or hex-washer.
- Used in poured concrete, concrete block or masonry.
- Pull-out resistance of concrete screws is much greater than in plastic screw anchors because they bite directly into the concrete.