The Simpson Titen HD 3/8 in. x 3 in. Type 316 Stainless Steel Heavy-Duty Screw Anchor sets the standard for anchoring in concrete and masonry across demanding environments. This state-of-the-art screw anchor combines the corrosion resistance of Type 316 stainless steel with an innovative heat-treated carbon-steel cutting thread that undercuts the base material for efficient load transfer - delivering fast, reliable installation with long-lasting performance wherever chemical exposure, moisture, or saltwater conditions are a concern.

Key Features

• Qualified for static and seismic loading conditions - meets the structural demands of both everyday and earthquake-zone applications, giving you confidence in critical connections.
• Undercutting thread design - efficiently transfers load directly to the base material, maximizing holding strength in concrete and masonry without relying on expansion force.
• No special drill bit required - installs using standard-sized ANSI tolerance drill bits, reducing tooling costs and simplifying the installation process on the job site.
• Hex-washer head design - eliminates the need for a separate washer, reducing hardware count and delivering a clean, professional finished appearance.
• Innovative carbon-steel cutting thread on a stainless body - effectively cuts through concrete while minimizing the amount of carbon steel present in the anchor, which means less expansion stress and reduced risk of cracking in the base material.
• Type 316 stainless steel construction - the optimal material choice for corrosive or extreme environments including saltwater exposure and settings where chemical or corrosive solutions are present, ensuring anchor integrity over the long term.
• Single-use design - the anchor is engineered for one installation only; reinstalling may cause excessive thread wear and reduce load capacity, so each anchor delivers its rated performance when used as intended.
• Installs with an impact wrench or hand tool using a 9/16 in. wrench - compatible with common tools already on site, keeping installation straightforward and efficient.

Why This Product

• Built for the harshest conditions - Type 316 stainless steel provides superior corrosion resistance compared to standard steel anchors, making this screw anchor a dependable choice for marine environments, chemical exposure, and persistently wet or damp installations where early anchor failure is not an option.
• Seismic and static qualification in one anchor - because the Titen HD is qualified for both static and seismic loading, contractors working in high-seismic zones can rely on a single anchor solution rather than sourcing specialty hardware for code-compliant projects.
• Faster installation without added complexity - the combination of standard ANSI drill bit compatibility, a no-washer hex-washer head, and impact wrench or hand tool installation means fewer steps, less specialized equipment, and quicker turnaround on concrete and masonry anchoring tasks.
• Precision-engineered load transfer - the undercutting thread design works by mechanically engaging the base material rather than relying solely on friction or expansion, providing a more reliable connection in concrete and masonry structures under real-world loading conditions.

Specifications

• Model Number: THD37300H6SS
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Diameter: 3/8 in.
• Length: 3 in.
• Wrench Size: 9/16 in.
• Recommended Fixture Hole Size: 1/2 to 9/16 in.
• Installation Method: Impact wrench or hand tool
• Packaging: Packs of 50 and Cartons of 200

Frequently Asked Questions

What type of environments is the Type 316 stainless-steel Titen HD screw anchor best suited for?

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. It provides superior corrosion resistance that ensures long-lasting performance where standard anchors would fail.

Do I need a special drill bit to install this screw anchor?

No special drill bit is required. The Titen HD screw anchor is designed to install using standard-sized ANSI tolerance drill bits, simplifying the installation process and reducing the need for specialized tooling.

Can I reuse the Titen HD screw anchor after removing it?

No. The Titen HD screw anchor should be used one time only. Installing the anchor multiple times may result in excessive thread wear and reduce load capacity, compromising the integrity of the connection.

What tool is needed to drive this anchor, and what wrench size is required?

The Titen HD screw anchor installs with an impact wrench or by hand tool. A 9/16 in. wrench size is required for proper installation.

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