The Simpson Titen HD 3/8 in. x 4 in. Zinc-Plated Countersunk Head Heavy-Duty Screw Anchor is a high-performance concrete and masonry screw anchor built for demanding structural applications where a flush, low-profile installation is required. Engineered from carbon steel with a zinc-plated finish, this anchor is designed for use in dry, interior, noncorrosive environments or temporary outdoor applications, and delivers reliable load performance under both static and seismic conditions. The countersunk head style provides a clean, flush-mount profile that hex head anchors cannot offer, making it the right choice for through-set applications where surface appearance and clearance matter.

Key Features

• Qualified for static and seismic loading conditions - meets the performance requirements for structural anchoring in seismic and wind-governed applications, giving installers confidence in code-sensitive projects.
• Countersunk head design - allows the anchor to sit flush with or below the fixture surface, enabling clean through-set and flush-mount installations not possible with a hex head.
• T50 6-lobe drive - reduces driver-bit cam-out during installation, resulting in faster, easier driving with less effort and fewer stripped fasteners compared to traditional recessed heads.
• Standard 3/8 in. drill bit, no special tooling required - the hole size matches the anchor size and accepts standard ANSI tolerance drill bits, eliminating the need to source specialty equipment before the job.
• Serrated teeth on the anchor tip - facilitate cutting into concrete or masonry as the anchor is driven, reducing installation torque and making the process smoother.
• Removable after installation - the screw anchor can be backed out when needed, making it well suited for temporary anchoring or applications where fixtures may need to be repositioned.
• Zinc-plated finish - provides basic corrosion protection appropriate for dry, interior, noncorrosive environments; not intended for permanent exterior or highly corrosive conditions.
• Driver bit included in each box - the correct T50 drive bit ships with the anchors, so installers have what they need ready to go without a separate purchase.

Why This Product

• Seismic and wind load qualification built in - unlike standard concrete fasteners, the Titen HD screw anchor is specifically qualified for seismic and wind-governed conditions, making it a dependable choice for structural work where load ratings must hold up under real-world dynamic forces.
• Flush-mount capability opens up applications hex head anchors cannot handle - the countersunk head allows the fastener to sit flush or below the fixture surface, giving contractors a clean result on exposed through-set applications where a protruding head would be unacceptable.
• Simpler installation with standard tooling and reduced torque - because the anchor uses a standard-sized drill bit, accepts a 6-lobe T50 driver that resists cam-out, and features a serrated tip that cuts as it drives, the installation process is faster and less demanding than alternatives requiring specialty bits or higher driving torque.
• Removability adds long-term flexibility - the ability to remove and reinstall the anchor makes this product practical for temporary anchoring scenarios or staged construction work where fixture locations may change, reducing the cost and labor of having to re-drill.

Specifications

• Model Number: THD37400CS
• Material: Carbon Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Diameter: 3/8 in.
• Length: 4 in.
• Head Type: Countersunk Head
• Head Diameter: 3/8 in.
• Drive Type: T50 6-Lobe
• Recommended Fixture Hole Size: 1/2 to 9/16 in.

Approved Applications

• Anchoring into cracked and uncracked concrete
• Anchoring into masonry substrates
• Flush-mount and through-set applications requiring a countersunk profile
• Dry, interior, noncorrosive environments
• Temporary outdoor anchoring applications
• Seismic and wind-governed structural conditions

What's Included

Each pack contains (50) Countersunk Titen HD Anchors, Driver bit included in each box.

Frequently Asked Questions

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

The Titen HD screw anchor is designed for use in cracked and uncracked concrete, as well as masonry substrates, providing reliable anchoring performance across a variety of structural base materials.

Can this anchor be used outdoors or in corrosive environments?

This anchor is zinc plated and is designed for use in dry, interior, noncorrosive environments or temporary outdoor applications. It is not recommended for permanent exterior use or highly corrosive environments. For long-lasting corrosion resistance, the Titen HD Type 316 stainless-steel option is available.

Why does the Titen HD feature a countersunk head instead of a hex head?

The countersunk head style is specifically designed for applications that require a flush-mount profile. Countersinking leaves a cleaner surface appearance for exposed through-set applications - a result that is not achievable with a standard hex head anchor.

Is the Titen HD anchor removable after installation?

Yes. The Titen HD screw anchor is removable, making it ideal for temporary anchoring or applications where fixtures may need to be relocated or repositioned at a later time.

Note: Product dimensions and/or thread length may differ from picture. Please refer to the specifications listed above for exact product details.