Simpson 1/4 in. x 3-3/4 in. Titen Turbo Hex-Head Screw Anchor by Simpson is a high-performance concrete and masonry screw anchor engineered for wood-to-concrete and wood-to-masonry fastening applications. The Titen Turbo's patented reverse thread design cuts cleanly into concrete and masonry substrates, delivering superior holding power while requiring less torque during installation - meaning faster, easier work with less fatigue for the installer. The distinctive blue zinc-plated and ceramic-coated carbon steel body resists corrosion while providing a reliable, durable connection in demanding structural and general construction applications.

Key Features

• Hex head with 5/16 in. drive - accepts a standard 5/16 in. hex driver or wrench for fast, no-slip installation with common tools
• Patented reverse thread design - cuts smoothly into concrete and masonry with less driving torque, reducing installer effort and speeding up the job
• 1/4 in. diameter x 3-3/4 in. length - sized for medium-depth anchoring in concrete and masonry, providing a secure connection for wood-to-concrete and wood-to-masonry assemblies
• Requires a 3/16 in. drill bit - close-tolerance hole sizing maximizes thread engagement and holding strength in the base material
• Zinc plated with ceramic coating (carbon steel) - dual-layer surface protection guards against corrosion in typical indoor and sheltered outdoor construction environments
• Standard blue color - visually identifies the anchor type on the job site, reducing mix-ups when working with multiple fastener types

Why This Product

• The reverse thread technology reduces driving torque compared to conventional concrete screws, making it practical for high-volume fastening tasks where installer fatigue is a real concern.
• The 5/16 in. hex drive head is compatible with widely available hex drivers and wrenches, so there is no need for specialized tooling on the job site.
• Zinc plating combined with ceramic coating delivers dual-layer corrosion resistance, making this anchor appropriate for use in environments where basic moisture protection is needed.
• The close-fit 3/16 in. pilot hole requirement maximizes thread-to-material engagement, which translates directly to stronger, more reliable pull-out resistance in concrete and masonry substrates.

Specifications

• Brand: Simpson Strong-Tie
• Head Type: Hex Head
• Drive Type: 5/16 in. Hex
• Wrench Size (in.): 5/16
• Diameter (in.): 1/4
• Length (in.): 3 3/4
• Drill Bit Diameter (in.): 3/16
• Material: Carbon Steel
• Coating: Zinc Plated with Ceramic Coating
• Color: Standard Blue
• Measurement Unit: Pack
• Country of Origin: Taiwan

Available Pack Options

• TNT25334HC25: 25 Pk
• TNT25334HC75: 75 Pk - includes (1) standard ANSI drill bit

Frequently Asked Questions

What size hole do I need to drill before installing this anchor?

You need to drill a 3/16 in. diameter pilot hole in your concrete or masonry base material. Using the correct hole size ensures the Titen Turbo's threads engage the material fully, which is essential for achieving rated holding strength.

What tool do I need to drive this anchor?

This anchor uses a 5/16 in. hex drive, so you can install it with a 5/16 in. hex driver bit in a drill or impact driver, or with a 5/16 in. wrench. No specialty tooling is required.

What is the Titen Turbo's reverse thread design, and why does it matter?

The patented reverse thread design allows the anchor to cut into concrete or masonry while requiring less torque than conventional concrete screws. This means smoother, faster driving and less physical effort for the installer, particularly when installing multiple anchors.

What is this anchor's coating, and what protection does it provide?

This anchor features zinc plating combined with a ceramic coating over a carbon steel body. The dual-layer finish provides corrosion resistance for typical construction environments, helping the anchor maintain its integrity in conditions where basic moisture protection is needed.

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