The Simpson Titen HD 1/2 in. x 8 in. Heavy-Duty Screw Anchor is a high-strength carbon steel screw anchor engineered for structural concrete and masonry fastening in the most demanding conditions. Its self-undercutting, non-expansion design delivers reliable performance in both cracked and uncracked concrete under static and seismic loading, while its ability to perform at reduced edge distances and spacings opens up structural applications where other anchors fall short. Zinc-plated for corrosion resistance in dry interior environments or temporary outdoor use, this heavy-duty screw anchor simplifies installation without sacrificing the load transfer performance structural work demands.

Key Features

• Qualified for static and seismic loading in cracked and uncracked concrete - gives structural professionals confidence that the anchor meets the testing requirements for the most critical and code-sensitive applications.
• Self-undercutting thread design - efficiently transfers load to the base material, providing stronger, more reliable holding power than standard expansion-style anchors in concrete and masonry.
• No special drill bit required - installs using standard-sized ANSI tolerance drill bits, reducing tool costs and simplifying jobsite prep without additional equipment.
• Hex-washer head with no separate washer needed - streamlines installation and delivers a clean, finished appearance once the anchor is set, saving time on every fastening point.
• Specialized heat-treating process on carbon steel - creates tip hardness for better cutting action during installation without compromising the ductility of the anchor body, balancing durability with structural integrity.
• Zinc-plated finish - makes the anchor suitable for permanent dry interior environments or temporary outdoor applications, adding flexibility across a range of project conditions.
• Single-use anchor design - the Titen HD is designed to be installed one time only; reinstalling may cause excessive thread wear and reduce load capacity, so each anchor delivers its full rated performance when used as intended.

Why This Product

• Built for structural applications others cannot handle - the non-expansion, self-undercutting design performs at reduced edge distances and spacings, making it a practical solution for concrete and masonry installations where spacing constraints rule out conventional anchors.
• Dual-qualified for static and seismic conditions - tested and shown to deliver outstanding performance under both loading types in cracked and uncracked concrete, so one anchor covers a wide range of structural fastening scenarios without the need to source separate hardware.
• Faster, simpler installation with standard tooling - because no specialty drill bit is required and the hex-washer head eliminates the need for a separate washer, crews can work efficiently without extra components or tool changes on the job.
• Engineered tip hardness without sacrificing ductility - Simpson's specialized heat-treating process means the anchor cuts cleanly into concrete while retaining the structural flexibility needed to meet seismic performance requirements, combining installation ease with long-term load reliability.

Specifications

• Manufacturer Part Number (MPN): THD50800H
• Material: Carbon Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Diameter: 1/2 in.
• Length: 8 in.
• TPI: 3
• Recommended Fixture Hole Size: 5/8 in. to 11/16 in.
• Packaging: Packs of 20 and Cartons of 40

Approved Applications

• Cracked concrete structural fastening under static loading conditions
• Uncracked concrete structural fastening under static loading conditions
• Seismic loading applications in both cracked and uncracked concrete
• Concrete and masonry installations requiring 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 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 THD50800H?

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 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 load capacity.

Is this anchor 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 environment use.

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