The Simpson Titen HD 3/4 in. x 4 in. Type 304 Stainless Steel Heavy-Duty Screw Anchor sets the standard for concrete and masonry anchoring in wet, moist, or damp environments. Built by Simpson with an innovative design that pairs the corrosion resistance of Type 304 stainless steel with heat-treated carbon-steel cutting threads, this heavy-duty screw anchor delivers fast, efficient installation and long-lasting structural performance where moisture and corrosion are ongoing concerns.

Key Features

• Qualified for static and seismic loading conditions - gives builders and engineers confidence that this anchor meets the demands of both everyday structural loads and code-required seismic applications.
• Undercutting thread design - efficiently transfers load directly into the base material, maximizing holding strength in concrete and masonry without relying on expansion forces.
• No special drill bit required - works with standard-sized ANSI tolerance drill bits, reducing tool costs and simplifying the installation process on any job site.
• Hex-washer head requires no separate washer - provides a clean, finished appearance after installation and eliminates the need for additional hardware, saving time and cost.
• Innovative carbon-steel cutting thread with minimal carbon-steel content - effectively cuts into concrete while keeping the amount of carbon steel in the anchor to a minimum, which means less expansion stress and a more controlled, reliable set.
• Type 304 stainless steel construction - provides durable corrosion resistance for applications where the environment may be wet, moist, or damp, offering a cost-effective alternative to Type 316 for less extreme conditions.
• Single-use design - installing the anchor one time only preserves full thread integrity and maintains rated load capacity, ensuring the connection performs exactly as engineered.
• Installs with an impact wrench or hand tool using a 1 1/8 in. wrench - compatible with common power and manual tools, making installation straightforward for both field crews and individual contractors.

Why This Product

• A true dual-material advantage - the combination of Type 304 stainless steel body and heat-treated carbon-steel cutting threads means buyers get meaningful corrosion resistance alongside the cutting performance needed for reliable installation in concrete and masonry - without having to choose one over the other.
• Seismic qualification removes guesswork - because this anchor is qualified for both static and seismic loading conditions, it is suitable for projects where engineers must specify anchors that meet strict code requirements, reducing back-and-forth during plan review.
• Simplified installation with no specialty tooling - standard ANSI tolerance drill bits and a 1 1/8 in. wrench are all that is needed, so contractors can install these anchors without sourcing or renting proprietary equipment.
• Cost-effective corrosion protection for wet and damp environments - Type 304 stainless steel delivers reliable performance where moisture exposure is a factor, at a lower price point than Type 316, making it the practical choice when extreme chemical or salt-water exposure is not a concern.

Specifications

• Manufacturer Part Number (MPN): THD75400H4SS
• Brand: Simpson Strong-Tie
• Diameter: 3/4 in.
• Length: 4 in.
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Head Type: Hex-Washer Head
• Installation Tool: Impact wrench or hand tool; wrench size 1-1/8 in.
• Recommended Fixture Hole Size: 7/8 to 15/16 in.
• Loading Conditions: Static and Seismic
• Packaging: Packs of 10 and Cartons of 40

Frequently Asked Questions

What base materials is the Titen HD screw anchor designed for?

The Titen HD stainless steel screw anchor is designed for use in concrete and masonry, making it suitable for a wide variety of structural anchoring applications.

Can the Titen HD screw anchor be reused or reinstalled?

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 its load capacity, compromising structural performance.

Do I need a special drill bit to install the THD75400H4SS?

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

What is the difference between Type 304 and Type 316 stainless steel Titen HD anchors?

Type 304 is a cost-effective solution for less extreme applications where the environment may be wet, moist, or damp. 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.

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