Stainless Multi-Fix T30 7.5mm Torx Flat Head Door Window Frame Screw Bolt Concrete Screws For Wood Fixing

Concrete screws are hardened screws with a double lead—consisting of alternating raised and lowered threads with notches cut into the raised threads—and a diamond-shaped, nail-type point. Special carbide bits are recommended for drilling pilot holes prior to driving concrete screws into masonry.

Also known as masonry screws, concrete screws cut their own threads when used in concrete, block, or brick. They can be used to secure wood, metal, or other materials, and eliminate the need for an anchor when used in light- to medium-duty applications

Blue Ruspert Concrete Screws

TOBO Fastener stocks flat Phil steel blue Ruspert concrete screws and hex washer slot steel blue Ruspert concrete screws in a variety of sizes and lengths to meet your needs. The blue Ruspert finish is a specialized ceramic material that allows concrete screws to also be used in pressure-treated lumber. This corrosion-resistant coating is comprised of three layers: metal zinc, a chemical conversion film, and a ceramic surface which is baked to a smooth, high-quality finish.