Simpson Titen HD 1/4 in. x 4 in. Type 316 Stainless Steel Heavy-Duty Screw Anchor is a premium concrete and masonry fastening solution engineered for demanding environments where corrosion resistance and structural reliability cannot be compromised. Combining the durability of Type 316 stainless steel with an innovative heat-treated carbon-steel cutting thread, this screw anchor delivers fast, efficient installation across a wide range of applications - from saltwater-exposed coastal structures to installations where chemical or corrosive solutions are present. Whether anchoring into concrete or masonry under static or seismic loading conditions, this anchor is built to perform where lesser fasteners fall short.

Key Features

• Qualified for static and seismic loading conditions - gives structural professionals and contractors confidence that this anchor meets the demands of code-sensitive and safety-critical installations.
• Undercutting thread design - efficiently transfers load directly to the base material, maximizing holding strength in concrete and masonry without requiring expansion force.
• Innovative carbon-steel cutting threads on a stainless body - the carbon-steel thread cuts cleanly through concrete while minimizing the total amount of carbon steel in the anchor, reducing expansion stress and preserving base material integrity.
• No special drill bit required - designed for use with standard-sized ANSI tolerance drill bits, so there is no need to source proprietary tooling before getting to work.
• Hex-washer head design - eliminates the need for a separate washer, speeding up installation and delivering a clean, professional finished appearance.
• Type 316 stainless steel construction - the optimal material choice for corrosive or extreme environments including saltwater exposure and applications where chemical or corrosive solutions are present, providing long-lasting protection against rust and degradation.
• Installs with an impact wrench or hand tool - flexible installation method suits both high-volume production work and occasional field use without requiring specialized power equipment.
• Single-use design - each anchor is intended for one-time installation; reinstalling can cause excessive thread wear and reduce load capacity, so plan hole placement carefully before driving.

Why This Product

• Purpose-built for the harshest environments - Type 316 stainless steel is specifically recommended over Type 304 when saltwater, chemical exposure, or extreme corrosive conditions are present, making this anchor the right call for coastal, industrial, and outdoor structural applications where long-term integrity matters most.
• Seismic and static dual qualification - this anchor is engineered to satisfy both static and seismic load requirements, giving engineers, inspectors, and contractors a single fastener solution that holds up under the full range of structural demands without requiring a separate product for seismic zones.
• Faster installation, no specialty tooling - because the Titen HD works with standard ANSI tolerance drill bits and drives with a common 3/8 in. wrench using an impact wrench or hand tool, crews spend less time sourcing equipment and more time completing the job efficiently.
• Structural confidence through proven thread technology - the undercutting carbon-steel thread transfers load directly into the base material rather than relying on wedge expansion, reducing stress on surrounding concrete and masonry and supporting more reliable long-term anchor performance.

Specifications

• Model Number: THDC25400H6SS
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Diameter: 1/4 in.
• Length: 4 in.
• Head Style: Hex-Washer Head
• Wrench Size: 3/8 in.
• Recommended Fixture Hole Size: 3/8 to 7/16 in.
• Installation Method: Installs with an impact wrench or by hand tool
• Packaging: Packs of 50 and Cartons of 250

Approved Applications

• Concrete anchoring in corrosive or extreme environments
• Masonry anchoring where saltwater exposure is present
• Applications involving chemical or corrosive solutions
• Seismic and static load-bearing structural connections
• Wet, moist, damp, or outdoor environments requiring enhanced corrosion resistance

Frequently Asked Questions

Can the Titen HD screw anchor be removed and reinstalled?

No. Use a Titen HD screw anchor one time only - installing the anchor multiple times may result in excessive thread wear and reduce load capacity.

What type of drill bit is required to install this anchor?

No special drill bit is required. The Titen HD is designed to install using standard-sized ANSI tolerance drill bits.

Why is Type 316 stainless steel recommended over Type 304 for certain environments?

Type 316 is the optimal choice for applications in corrosive or extreme environments such as salt water, or when chemical or corrosive solutions are present. Type 304 is a cost-effective solution for less extreme applications where the environment may be wet, moist, or damp.

Is this anchor qualified for seismic applications?

Yes. The Titen HD screw anchor is qualified for both static and seismic loading conditions, making it suitable for use in seismically active regions.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.