The Simpson Titen HD 5/8 in. x 8 in. Type 304 Stainless Steel Heavy-Duty Screw Anchor is an engineered concrete and masonry screw anchor built for structural connections in wet, moist, or damp environments where reliable corrosion resistance and high-performance load transfer are essential. Simpson combines the corrosion resistance of Type 304 stainless steel with an innovative heat-treated carbon-steel cutting thread design that undercuts the base material for efficient load transfer, delivering fast installation and lasting peace of mind across a wide range of demanding applications.

Key Features

• Qualified for static and seismic loading conditions - provides verified structural performance for both everyday and seismic applications, giving engineers and installers confidence in critical connections.
• Undercutting thread design - efficiently transfers the load to the base material by cutting into concrete or masonry as the anchor is driven, resulting in a stronger, more secure hold.
• No special drill bit required - designed to install using standard-sized ANSI tolerance drill bits, so you can work with commonly available tooling without additional procurement.
• Hex-washer head with no separate washer needed - simplifies installation and produces a clean, finished appearance once the anchor is set.
• Innovative carbon-steel cutting thread on a stainless body - the THDSS design limits the amount of carbon steel in the anchor, which means less expansion stress on the base material while still cutting concrete effectively.
• Type 304 stainless steel construction - provides a cost-effective corrosion-resistant solution for less extreme environments where Type 316 is not required, without sacrificing durability in wet or damp conditions.
• One-time installation design - the anchor is engineered for a single installation to preserve full thread integrity and rated load capacity, eliminating any guesswork about reuse safety.

Why This Product

• Corrosion resistance meets structural performance - by pairing Type 304 stainless steel with heat-treated carbon-steel cutting threads, this anchor delivers dependable long-term performance in wet, moist, or damp environments without the premium cost of Type 316 where conditions do not demand it.
• Seismic and static qualification removes guesswork - verified performance under both static and seismic loading conditions means this anchor meets the demands of code-sensitive projects and structural applications without requiring additional engineering justification for qualified configurations.
• Straightforward installation with standard tooling - compatibility with standard ANSI tolerance drill bits and installation by impact wrench or hand tool using a 15/16 in. wrench means no specialty equipment is needed, reducing job-site complexity and labor time.
• Purpose-built design details add up to a cleaner, stronger result - the integrated hex-washer head, single-use thread integrity, and undercutting thread geometry work together to produce consistent, high-quality connections that hold up over time in concrete and masonry substrates.

Specifications

• Manufacturer Part Number (MPN): THDB62800H4SS
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Diameter: 5/8 in.
• Length: 8 in.
• Recommended Fixture Hole Size: 3/4 to 13/16 in.
• Wrench Size: 15/16 in.
• Install With: Installs with an impact wrench or by hand tool
• Packaging: Packs of 10 and Cartons of 20

Approved Applications

• Concrete anchoring in wet, moist, or damp environments
• Masonry anchoring requiring corrosion-resistant fasteners
• Structural connections subject to static loading conditions
• Structural connections subject to seismic loading conditions
• Applications where a cost-effective stainless steel anchor is preferred over Type 316 for less extreme corrosive conditions

Frequently Asked Questions

Can the Titen HD screw anchor be removed and reinstalled?

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

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

No special drill bit is required. The THDB62800H4SS is designed to install using standard-sized ANSI tolerance drill bits, making it convenient and straightforward to use with commonly available tooling.

What tool is used to drive the Titen HD screw anchor?

The anchor can be installed with an impact wrench or by hand tool. A 15/16 in. wrench size is required, and the hex-washer head eliminates the need for a separate washer during installation.

Why is Type 304 stainless steel used instead of Type 316 for this anchor?

Type 304 stainless steel is a cost-effective solution for applications in environments that may be wet, moist, or damp but are not exposed to extreme corrosive conditions such as salt water or harsh chemical solutions. Type 316 would be the preferred choice for those more extreme environments.

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