The Simpson Titen HD 1/4 in. x 4 in. Heavy-Duty Screw Anchor is a high-strength fastening solution engineered for reliable performance in both cracked and uncracked concrete and masonry. Its self-undercutting, non-expansion design makes it well-suited for structural applications even at reduced edge distances and spacings, while its qualification under both static and seismic loading conditions means it meets demanding code requirements across a wide range of projects. Recommended for permanent dry, interior non-corrosive environments or temporary outdoor applications, this carbon steel anchor delivers a clean, dependable installation in the substrates where secure anchoring matters most.

Key Features

• Qualified for static and seismic loading conditions - gives installers confidence the anchor meets performance requirements in both everyday structural and seismic-zone applications.
• Self-undercutting thread design transfers load efficiently to the base material - maximizes holding strength in the concrete or masonry substrate without relying on expansion force.
• No special drill bit required - installs using standard-sized ANSI tolerance drill bits, so there is no need to source additional tooling or change your existing setup.
• Hex-washer head with no separate washer needed - simplifies installation and produces a clean, professional finished appearance on the fixture surface.
• Specialized heat-treating process on the carbon steel tip - creates the hardness needed for clean cutting on entry while preserving ductility throughout the anchor body, reducing the risk of breakage during installation.
• Zinc-plated finish suitable for temporary exterior use - provides a level of corrosion resistance appropriate for short-term outdoor or non-corrosive interior environments.
• Single-use design protects load capacity - the anchor is engineered for one installation only; reinstalling may cause excessive thread wear and compromise the holding strength the anchor was rated to deliver.

Why This Product

• Dual-condition concrete performance - unlike anchors rated only for uncracked substrates, the Titen HD has been tested and shown to provide outstanding performance in both cracked and uncracked concrete under static and seismic loading, making it a versatile choice for structural concrete fastening where conditions may vary.
• Structural-grade anchoring at tight layouts - the non-expansion, self-undercutting mechanism allows the anchor to be used in structural applications even at reduced edge distances and spacings, giving engineers and contractors more flexibility in fastener placement without sacrificing holding power.
• Straightforward installation with common tooling - because the Titen HD works with standard ANSI tolerance drill bits and requires no separate washer, the installation process stays simple and efficient without adding extra components or specialty equipment to the job.
• Purpose-built tip hardness without brittleness - Simpson's specialized heat-treating process balances tip hardness for better cutting with overall ductility, so the anchor cuts cleanly into concrete and masonry while resisting the kind of fracture that can occur with anchors that sacrifice flexibility for surface hardness.

Specifications

• Manufacturer Part Number (MPN): THDB25400H
• Brand: Simpson Strong-Tie
• Diameter: 1/4 in.
• Length: 4 in.
• Material: Carbon Steel
• Coating / Finish: Zinc Plated
• Recommended Fixture Hole Size: 3/8 to 7/16 in.
• Packaging: Packs of 50 and Cartons of 250

Approved Applications

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

Frequently Asked Questions

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

Yes. The Titen HD is specifically designed for optimum performance in both cracked and uncracked concrete, and has been tested and shown to provide outstanding performance under both static and seismic loading conditions.

Does installing the Titen HD require a special drill bit?

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

Can this 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 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. It may also be used for temporary outdoor applications, but 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.