The Simpson Titen HD 3/8 in. x 4 in. Mechanically Galvanized Heavy-Duty Screw Anchor is a high-strength carbon steel anchor engineered for reliable structural connections in cracked and uncracked concrete, as well as uncracked masonry. Its proprietary heat treatment and ASTM B695 Class 65 mechanically galvanized coating make it well suited for both interior and exterior anchoring applications, including sill plates, ledgers, post bases, holdowns, and temporary work such as bracing and formwork. When a fixture needs to be relocated or a temporary anchor removed, the screw anchor is designed to be easily extracted - adding practical flexibility to demanding jobsite conditions.

Key Features

• Head-stamped for easy identification - allows installers to quickly confirm the correct anchor is in place without stopping to check packaging, reducing the risk of mix-ups on busy job sites.
• Serrated teeth on the tip facilitate cutting and reduce installation torque - the anchor drives in with less resistance, speeding up installation and reducing strain on tools and operators.
• Thread design undercuts to efficiently transfer the load to the base material - load is directed into the concrete or masonry more effectively, supporting strong, dependable holding performance.
• Specialized heat-treating process creates tip hardness for better cutting without compromising ductility - the anchor cuts cleanly through hard base materials while retaining the toughness needed to resist cracking or snapping under structural loads.
• Hex washer head requires no separate washer, unless required by code - one less component to source or install, simplifying the fastening process and reducing material costs.
• ASTM B695 Class 65 mechanically galvanized coating - provides corrosion resistance that qualifies the anchor for exterior applications, protecting long-term performance in exposed conditions.
• No special drill bit required - designed to install using standard-sized ANSI tolerance drill bits, so crews can get to work without sourcing proprietary tooling.

Why This Product

• Rated for cracked and uncracked concrete - many screw anchors are limited to uncracked base materials, but the Titen HD is specifically engineered for cracked concrete as well, broadening the range of structural conditions where it can be confidently deployed.
• Built for interior and exterior use - the ASTM B695 Class 65 mechanically galvanized finish delivers the corrosion resistance needed for outdoor and exposed applications, making this a single anchor solution across a wide variety of project environments.
• Removable and reusable for temporary applications - unlike adhesive or expansion anchors that are difficult or impossible to remove cleanly, the Titen HD screw anchor is designed for extraction, making it a practical choice for bracing, formwork, and situations where fixture locations may change.
• Engineered for broad structural applications - from sill plates and ledgers to post bases, seating, and holdowns, one anchor covers a wide range of common structural connections, reducing the number of different fasteners a crew needs to carry and manage on site.

Specifications

• MPN: THD37400HMG
• Brand: Simpson Strong-Tie
• Diameter: 3/8 in.
• Length: 4 in.
• Thread Length: 3 1/2 in.
• TPI: 3 1/3
• Material: Carbon Steel
• Coating: Mechanically Galvanized
• Finish: Mechanically Galvanized
• Recommended Fixture Hole Size: 1/2 to 9/16 in.
• Installation: No special drill bit required; designed to install using standard-sized ANSI tolerance drill bits
• Packaging: Packs of 50 and Cartons of 200

Approved Applications

• Cracked and uncracked concrete anchoring
• Uncracked masonry anchoring
• Sill plates
• Ledgers
• Post bases
• Seating applications
• Holdown applications
• Temporary applications such as bracing and formwork
• Fixture relocation applications
• Interior and exterior anchoring

Frequently Asked Questions

Can the Titen HD screw anchor be used in cracked concrete?

Yes. The Titen HD heavy-duty screw anchor is specifically engineered for use in both cracked and uncracked concrete, as well as uncracked masonry, making it versatile for a wide range of structural anchoring conditions.

Does installing the THD37400HMG require a special drill bit?

No special drill bit is required. The Titen HD screw anchor is designed to install using standard-sized ANSI tolerance drill bits, streamlining the installation process without the need for proprietary tooling.

Is the Titen HD anchor suitable for exterior use?

Yes. The THD37400HMG is qualified for exterior applications. Its ASTM B695 Class 65 mechanically galvanized coating provides corrosion resistance that makes it appropriate for both interior and exterior anchoring applications.

Can this screw anchor be removed after installation?

Yes. The Titen HD screw anchor is designed to be easy to remove, making it well-suited for temporary applications such as bracing and formwork, or situations where a fixture needs to be relocated.

Note: Product dimensions and/or thread length may differ from picture. Please refer to the specifications listed above for accurate product details.