Simpson Strong-Tie Introduces Light-Duty Screw Anchor for Corrosive Environments

Titen HD screw anchorsSimpson Strong-Tie is the leader in engineered structural connectors and building solutions. Recently, the company introduced the first 1/4″-diameter stainless-steel screw anchor. They designed this for lighter-duty applications in severely corrosive environments. Its code listed for use in cracked concrete. This new anchor is part of the broad line of code-listed stainless-steel Titen HD heavy-duty screw anchors. The 1/4″ THDSS screw anchor combines the corrosion resistance of Type 316 stainless steel with the undercutting ability of harder, heat-treated carbon steel.

The THDSS helical-coil threads feature a serrated carbon-steel leading thread. These cut a channel so the stainless-steel threading can securely interlock with concrete and masonry.

Traditional carbon-tipped stainless-steel anchors are vulnerable to rust and expansion. This can crack the concrete. However, the helical-coil carbon thread of the THDSS greatly reduces the anchor’s overall carbon-steel quantity. This makes it much less likely to cause concrete damage if corrosion occurs. For comparison, a 1/2″ x 5″ THDSS screw anchor contains less than 1% carbon steel. Other stainless-steel screw anchors of the same size can contain as much as 18% carbon steel.

Additional features

The addition of the 1/4″-diameter anchor to the THDSS lineup (which also includes diameters of 3/8″, 1/2″, 5/8″ and 3/4″) rounds out the company’s offering of stainless-steel anchors suitable for bridge, marine, water-treatment plant, and heavier civil-construction and retrofit applications where corrosive elements pose a hazard to standard carbon-steel screw anchors. In addition to their strength and environmental adaptability, all Titen HD screw anchors install easily with an impact wrench or hand tool.

“Titen HD screw anchors have quickly become a trusted anchor solution because they offer the performance that designers need and the ease of installation that contractors demand,” says Simpson Strong-Tie senior product manager Mike Steiber. “When the job calls for installation in multiple types of environments, including corrosive environments, wedge anchor and adhesive options often face difficult spacing and installation issues, so for applications that need stainless-steel anchors, Titen HD provides a new standard for the market.”

Stainless-steel Titen HD anchors are code listed for a wide variety of applications. These are seen in IAPMO UES ER-493 (for concrete) and ICC-ES ESR-1056 (for masonry). For more information about the family of THDSS screw anchors, download the THDSS product flier.

About Simpson Strong-Tie Company Inc.

Simpson Strong-Tie is the world leader in structural solutions. The company has both products and technology that help people design and build safer, stronger homes, buildings, and communities. As a pioneer in the building industry, the company has an unmatched passion for problem-solving. They do this through both skillful engineering and thoughtful innovation. Both the structural systems research and rigorous testing enable them to design code-listed, value-engineered solutions for a multitude of applications in wood, steel, and concrete structures. Simpson-Strong Tie’s dedication to pursuing ever-better construction products and technology and to surrounding their customers with exceptional service and support has been core to their mission since 1956. For more information, either visit or follow the company on Facebook, Twitter, YouTube and LinkedIn.

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