The Simpson Titen HD 3/4 in. x 8-1/2 in. Type 316 Stainless Steel Heavy-Duty Screw Anchor is engineered for concrete and masonry anchoring in the most demanding conditions, from salt water exposure to chemically aggressive environments. Built with Type 316 stainless steel and an innovative heat-treated carbon-steel cutting thread design, this heavy-duty screw anchor delivers fast, reliable installation along with long-lasting corrosion resistance - giving contractors and builders confidence in applications where standard anchors fall short.

Key Features

• Qualified for static and seismic loading conditions - meets the performance requirements for both standard and seismic applications, so you can specify this anchor on code-compliant projects with confidence.
• Undercutting thread design efficiently transfers load to the base material - the thread geometry cuts into concrete or masonry as it installs, maximizing load transfer and holding strength without relying on expansion forces.
• No special drill bit required - works with standard-sized ANSI tolerance drill bits, reducing the need for specialty tooling and streamlining your installation process.
• Hex-washer head requires no separate washer - the integrated head design provides a clean finished appearance and eliminates extra hardware, saving time on the job.
• Innovative carbon-steel cutting thread limits the amount of carbon steel in the anchor - less carbon steel means less expansion stress on the base material, helping protect the integrity of concrete and masonry around the anchor point.
• Made from Type 316 stainless steel - provides superior corrosion resistance in salt water, chemically aggressive, or extreme environments where lesser materials would degrade prematurely.
• Installs with an impact wrench or by hand tool using a 1-1/8 in. wrench - compatible with common power and manual tools, so installation fits into your existing workflow without added equipment.
• Single-use design - each anchor is intended for one-time installation; reuse can cause excessive thread wear and reduce load capacity, so following this guideline protects the integrity of your connection.

Why This Product

• Purpose-built for corrosive and extreme environments - Type 316 stainless steel is the optimal material choice when the installation site involves salt water, chemical exposure, or persistently wet and aggressive conditions, offering a level of corrosion resistance that Type 304 and carbon-steel anchors cannot match in these scenarios.
• Seismic and static load qualification removes guesswork - because this anchor is qualified for both static and seismic loading conditions, it is suitable for a wide range of structural applications without requiring separate anchors for different load types.
• Simplified installation with no specialty tooling - the combination of standard ANSI tolerance drill bit compatibility and common wrench-driven installation means less time sourcing specialized equipment and more time completing the job efficiently.
• Hybrid thread technology delivers cutting performance with minimal expansion - the heat-treated carbon-steel cutting threads do the hard work of engaging concrete and masonry, while keeping overall carbon-steel content low to reduce expansion stress on the surrounding base material.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: THD75812H6SS
• Diameter: 3/4 in.
• Length: 8-1/2 in.
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Head Type: Hex-Washer Head
• Drive Type: 1-1/8 in. Hex
• Recommended Fixture Hole Size: 7/8 in. to 15/16 in.
• Installation Tool: Impact wrench or hand tool; wrench size 1-1/8 in.
• Packaging: Packs of 5 and Cartons of 10

Approved Applications

• Concrete anchoring in corrosive or extreme environments, including salt water exposure
• Masonry anchoring where chemical or corrosive solutions are present
• Static and seismic loading applications requiring code-qualified performance
• Installations requiring long-lasting corrosion resistance in wet, moist, damp, or chemically aggressive conditions

Frequently Asked Questions

What makes Type 316 stainless steel the right choice for this anchor?

Type 316 stainless steel 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 compared to Type 304, making it ideal for the most demanding installation conditions.

Do I need a special drill bit to install the THD75812H6SS?

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 the Titen HD screw anchor be removed and reinstalled?

No. You should use a Titen HD screw anchor one time only - installing the anchor multiple times may result in excessive thread wear and reduce load capacity. Single-use installation is required to maintain rated performance.

What tool is required to drive the THD75812H6SS anchor?

The anchor installs with an impact wrench or by hand tool using a 1-1/8 in. wrench size. The hex-washer head design also eliminates the need for a separate washer, providing a clean installed appearance.

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