The Simpson Titen HD 5/8 in. x 8 in. Mechanically Galvanized Washer-Head Heavy-Duty Screw Anchor is a high-strength concrete and masonry anchor engineered for demanding structural connections in both cracked and uncracked concrete. Its low-profile washer-head design is purpose-built for sill plate anchoring and installations where modular wall or floor systems must sit flush over the anchor - eliminating the need to notch wall framing. The T60 6-Lobe drive reduces cam-out and stripping during installation, and the mechanically galvanized finish makes this screw anchor code listed for exterior use.

Key Features

• Qualified per ICC-ES AC193 and ACI 355.2 for cracked and uncracked concrete - gives you confidence the anchor meets recognized code standards for static, wind, and seismic loading conditions, supporting use in structurally critical applications.
• Standard fractional sizing with hole size matching anchor size - simplifies layout and drilling by eliminating guesswork; the drill bit diameter matches the anchor diameter exactly.
• Compatible with standard ANSI tolerance drill bits - no proprietary tooling required, so you can get to work with bits you already own.
• Includes a 1/2 in. socket adapter and two T-drive bits - everything needed to drive the anchor is in the box, reducing trips to the tool bag and keeping installation moving.
• Removable design - anchors can be extracted after installation, making this a practical choice for temporary anchoring or fixtures that may need to be repositioned later.
• Washer-head profile - the low installed height allows modular wall and floor systems to be placed directly on top, and the design accommodates applications where a hex head would interfere with surrounding structure.
• Mechanically galvanized finish, code listed for exterior applications - provides corrosion resistance suited to outdoor environments, so the anchor remains compliant and durable in exposed conditions.

Why This Product

• One anchor for multiple substrates and loading scenarios - rated for cracked concrete, uncracked concrete, and masonry under static, wind, and seismic conditions, this screw anchor reduces the need to source different fasteners for different site conditions.
• Built for sill plate and low-clearance installations - the washer head's minimal installed profile lets modular wall and floor systems sit flush without notching framing, saving labor and preserving structural integrity at the connection point.
• Straightforward installation with no specialty tooling - standard ANSI drill bits, a 1/2 in. socket adapter, and two T-drive bits are all that is needed, keeping setup simple and reducing the risk of stripped fasteners thanks to the 6-Lobe drive design.
• Flexibility for temporary or permanent anchoring - the removable nature of the Titen HD makes it equally useful for permanent structural connections and interim anchoring situations where the fixture location may change.

Specifications

• MPN: THDB62800WHMG
• Brand: Simpson Strong-Tie
• Material: Carbon Steel
• Coating: Mechanically Galvanized
• Finish: Mechanically Galvanized
• Diameter: 5/8 in.
• Length: 8 in.
• Head Diameter: 1 3/4 in.
• Drive Type: T60 6-Lobe
• Recommended Fixture Hole Size: 7/8 to 15/16 in.

Approved Applications

• Cracked and uncracked concrete under static, wind, and seismic loading conditions
• Masonry substrates
• Sill plate anchoring applications
• Exterior applications (code listed for exterior use with mechanically galvanized finish)
• Temporary anchoring or installations where fixtures may need to be relocated
• Installations requiring a minimal head profile, such as modular wall and floor systems

What's Included

Each pack contains (10) Titen HD Mechanically Galvanized Washer-Head Screw Anchors, 1/2-in. socket adapter and (2) T-drive bits.

Frequently Asked Questions

What type of base material is the Titen HD THDB62800WHMG rated for?

The Titen HD is qualified for use in both cracked and uncracked concrete, as well as masonry. It is tested and listed in accordance with ICC-ES AC193 and ACI 355.2 for static, wind, and seismic loading conditions.

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

No special drill bit is required. The Titen HD is designed to install using standard-sized ANSI tolerance drill bits. Because it uses standard fractional sizing, the hole size matches the anchor size - in this case, a 5/8 in. drill bit.

Why choose a washer-head design over a hex-head anchor?

The washer-head design provides a low installed profile, making it the preferred choice in applications where a hex head is incompatible or where minimal head clearance is required. This is especially useful in sill plate applications where modular wall or floor systems are installed on top, as no notching of wall framing is needed to accommodate the anchor.

Is the THDB62800WHMG suitable for outdoor or exterior use?

Yes. The mechanically galvanized coating on the Titen HD THDB62800WHMG is code listed for exterior applications, making it appropriate for outdoor installations where corrosion resistance is a consideration.

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