The Simpson Titen HD 1/2 in. x 8 in. Type 304 Stainless-Steel Heavy-Duty Screw Anchor delivers fast, efficient fastening in concrete and masonry applications where the environment may be wet, moist, or damp. Built from Type 304 stainless steel with an innovative heat-treated carbon-steel cutting thread, this heavy-duty screw anchor combines long-lasting corrosion resistance with the undercutting performance needed for reliable structural connections. It is engineered to meet the demands of both static and seismic loading conditions, making it a trusted solution for a wide range of construction and anchoring applications.

Key Features

• Qualified for static and seismic loading conditions - meets the structural demands of code-sensitive projects, giving you confidence in both everyday and earthquake-zone installations.
• Thread design undercuts to efficiently transfer the load to the base material - maximizes load capacity directly within the concrete or masonry, producing a stronger, more reliable connection.
• Innovative carbon-steel cutting thread with minimal carbon-steel content - effectively cuts into concrete during installation while keeping expansion forces low, reducing stress on the base material.
• No special drill bit required - installs using standard-sized ANSI tolerance drill bits, so no additional tooling investment is needed on the job site.
• Hex-washer head design requires no separate washer - simplifies installation, reduces parts on the job, and delivers a clean finished appearance.
• Installs with an impact wrench or by hand tool using a 3/4 in. wrench - compatible with common tools already on site, keeping installation fast and straightforward.
• One-time-use design - engineered for single installation to preserve full thread integrity and load capacity; reinstalling the anchor risks excessive thread wear and reduced performance.

Why This Product

• Corrosion resistance built for real-world wet environments - Type 304 stainless-steel construction makes this screw anchor a cost-effective, long-lasting choice for applications in wet, moist, or damp conditions where a standard carbon-steel anchor would be inadequate.
• Seismic and static qualification in one anchor - whether the project involves everyday structural fastening or requires compliance with seismic design criteria, this anchor is qualified for both loading conditions, reducing the need to source multiple anchor types.
• Streamlined installation with no specialty tooling - the combination of standard ANSI tolerance drill bit compatibility and hex-washer head design means faster setup, fewer parts to manage, and a cleaner result without extra hardware.
• Proven performance in concrete and masonry - the undercutting thread technology efficiently transfers load directly into the base material, making this heavy-duty screw anchor a dependable choice across a broad range of structural concrete and masonry fastening applications.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: THD50800H4SS
• Diameter: 1/2 in.
• Length: 8 in.
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Head Type: Hex-Washer Head
• Drive / Wrench Size: 3/4 in. Hex
• Installation Method: Impact wrench or hand tool
• Recommended Fixture Hole Size: 5/8 in. to 11/16 in.
• Drill Bit Size: 1/2 in. (standard ANSI tolerance)
• Loading Conditions: Static and seismic
• Packaging: Packs of 20 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 installation in concrete and masonry, making it suitable for a wide range of structural fastening applications in those base materials.

What type of drill bit is required to install this anchor?

No special drill bit is required. The THD50800H4SS is designed to install using standard-sized ANSI tolerance drill bits, with a 1/2 in. drill bit size recommended.

Can the Titen HD screw anchor be removed and reinstalled?

No. The Titen HD screw anchor is intended for one-time use only. Installing the anchor multiple times may result in excessive thread wear and reduce its load capacity, compromising the integrity of the connection.

What is the difference between Type 304 and Type 316 stainless steel for this anchor?

Type 304 stainless steel 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.