The Simpson Titen HD 3/8 in. x 4 in. Heavy-Duty Screw Anchor is a high-strength concrete and masonry screw anchor engineered for structural applications where dependable load transfer is non-negotiable. Its self-undercutting, non-expansion design delivers outstanding performance in both cracked and uncracked concrete under static and seismic loading conditions, making it a trusted choice for demanding structural installations. Built from carbon steel with a specialized heat-treating process and a zinc-plated finish, this heavy-duty screw anchor is suited for permanent dry interior environments as well as temporary outdoor applications.

Key Features

• Qualified for static and seismic loading conditions - gives contractors and engineers confidence that the anchor meets verified performance standards across a wide range of structural and code-critical applications.
• Self-undercutting thread design efficiently transfers load to the base material - maximizes holding strength in concrete and masonry without relying on expansion force, making it safe to use at reduced edge distances and spacings.
• No special drill bit required - installs using standard-sized ANSI tolerance drill bits, so there is no need to purchase additional tooling or change your existing workflow.
• Hex-washer head requires no separate washer - simplifies installation and produces a clean, finished appearance without extra hardware.
• Specialized heat-treating process creates tip hardness without sacrificing ductility - the anchor cuts cleanly into concrete and masonry while retaining the toughness needed for structural reliability.
• Zinc-plated carbon steel construction - suitable for permanent dry interior environments and temporary outdoor use, offering flexibility across a range of job site conditions.
• Single-use design - the Titen HD screw anchor is intended for one-time installation only; reinstalling the anchor may cause excessive thread wear and reduce load capacity, so proper placement the first time is essential.

Why This Product

• Versatile structural performance in concrete and masonry - tested and qualified for both cracked and uncracked concrete under static and seismic conditions, this anchor covers a broad range of structural applications, including those with reduced edge distances and spacings where other anchors may fall short.
• Fast, straightforward installation with common tooling - because no specialized drill bit is needed and the hex-washer head eliminates an extra component, installation is efficient without compromising the structural integrity the application demands.
• Engineered tip hardness backed by heat treatment - Simpson's specialized heat-treating process produces a tip that cuts cleanly and consistently into base materials while preserving ductility, reducing the risk of tip failure during installation.
• Dual-environment suitability - the zinc-plated finish extends the usable range of this heavy-duty screw anchor from permanent dry interior settings to temporary exterior job site conditions, reducing the need to stock multiple anchor types for different environments.

Specifications

• Model Number (MPN): THD37400H
• Diameter: 3/8 in.
• Length: 4 in.
• TPI: 3 1/3
• Material: Carbon Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Recommended Fixture Hole Size: 1/2 to 9/16 in.
• Packaging: Packs of 50 and Cartons of 200

Approved Applications

• Cracked and uncracked concrete under static loading conditions
• Cracked and uncracked concrete under seismic loading conditions
• Uncracked masonry applications
• Structural applications at reduced edge distances and spacings
• Permanent dry, interior non-corrosive environments
• Temporary outdoor applications

Frequently Asked Questions

Can the Titen HD be used in cracked concrete?

Yes. The Titen HD heavy-duty screw anchor is specifically designed and tested for optimum performance in both cracked and uncracked concrete under static and seismic loading conditions.

Do I need a special drill bit to install the Titen HD anchor?

No special drill bit is required. The Titen HD is designed to install using standard-sized ANSI tolerance drill bits, making installation straightforward with common tooling.

Can the Titen HD anchor be removed and 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.

Is the Titen HD suitable for outdoor use?

The zinc-plated carbon steel Titen HD anchor is recommended for permanent dry, interior non-corrosive environments or temporary outdoor applications. It is not intended for permanent exterior or corrosive environments.

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