The Simpson Titen HD 5/8 in. x 4 in. Type 304 Stainless Steel Heavy-Duty Screw Anchor is engineered for reliable fastening into concrete and masonry in wet, moist, or damp environments. Built from Type 304 stainless steel, this heavy-duty screw anchor pairs the corrosion resistance of 300 Series stainless steel with innovative heat-treated carbon-steel cutting threads, delivering fast, efficient installation and long-lasting performance wherever environmental exposure is a concern. It installs using a standard impact wrench or hand tool with a 15/16 in. hex, making it a practical, no-fuss solution for contractors and builders who demand consistent results.

Key Features

• Qualified for static and seismic loading conditions - gives buyers confidence that the anchor meets performance requirements for both everyday structural loads and earthquake-zone applications.
• Thread design undercuts to efficiently transfer the load to the base material - maximizes holding strength in concrete and masonry so the anchor performs reliably under demanding conditions.
• No special drill bit required; designed to install using standard-sized ANSI tolerance drill bits - saves time and money on the job site because installers can use tools already on hand.
• Hex-washer head requires no separate washer - simplifies installation and delivers a clean, professional finished appearance without extra hardware.
• Innovative carbon-steel thread cuts concrete while significantly limiting the amount of carbon steel in the anchor - less carbon steel means less expansion and reduced stress on the base material during installation.
• Type 304 stainless steel construction - provides a cost-effective corrosion-resistant solution for applications in wet, moist, or damp conditions without the premium cost of Type 316.
• Single-use design - installing the anchor one time only preserves full thread integrity and maintains rated load capacity, protecting the safety of the completed assembly.

Why This Product

• Corrosion resistance built for real-world exposure - Type 304 stainless steel construction makes this screw anchor a dependable, cost-effective choice for outdoor, wet, or damp concrete and masonry fastening applications where carbon-steel anchors would be prone to rust and degradation over time.
• Seismic and static load qualification in one anchor - whether the project is in a high-seismic zone or a standard structural application, this anchor is qualified for both conditions, reducing the need to source separate hardware for different job requirements.
• Faster installation with no specialty tooling - compatible with standard ANSI tolerance drill bits and installable with a common impact wrench or hand tool, this anchor keeps crews moving without waiting on special equipment or additional supplies.
• Undercutting thread technology for superior load transfer - the heat-treated carbon-steel cutting threads mechanically engage the base material during installation, efficiently distributing load and providing high-strength performance in concrete and masonry without anchor expansion that can stress the surrounding material.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: THDB62400H4SS
• Diameter: 5/8 in.
• Length: 4 in.
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Head Type: Hex-Washer Head
• Drive Type: 15/16 in. Hex
• Installation Tool: Impact wrench or hand tool
• Recommended Fixture Hole Size: 3/4 in. to 13/16 in.
• Drill Bit Size: 5/8 in. (standard ANSI tolerance)
• Load Qualifications: Static and seismic loading conditions
• Packaging: Packs of 10 and Cartons of 40

Frequently Asked Questions

What base materials is the Titen HD screw anchor designed for?

The Titen HD screw anchor is designed for installation in concrete and masonry base materials, making it a versatile choice for a wide range of structural fastening applications.

Do I need a special drill bit to install this anchor?

No special drill bit is required. The Titen HD is designed to install using standard-sized ANSI tolerance drill bits, with a recommended drill bit size of 5/8 in.

Can the Titen HD screw anchor be removed and reinstalled?

No. Use a Titen HD screw anchor one time only - installing the anchor multiple times may result in excessive thread wear and reduce load capacity.

Why is Type 304 stainless steel used, and when would Type 316 be preferred?

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.