The Simpson Titen HD 3/8 in. x 4 in. Countersunk Head Heavy-Duty Screw Anchor in Type 316 Stainless Steel is built for demanding anchoring applications where both structural performance and long-term corrosion resistance are non-negotiable. Engineered for use in cracked and uncracked concrete as well as masonry, this heavy-duty screw anchor delivers reliable holding strength under static, seismic, and wind-governed loading conditions. The countersunk head profile enables flush-mount and through-set installations where a standard hex head simply will not work, while the Type 316 stainless steel construction stands up to severe corrosive environments - including coastal and outdoor exposure - where carbon steel anchors fall short.

Key Features

• Qualified for static and seismic loading conditions - gives you confidence the anchor meets rigorous performance standards in structurally demanding or code-sensitive applications.
• Hole size same as anchor size (3/8 in.) - simplifies layout and drilling with no guesswork, keeping installation straightforward and efficient.
• No special drill bit required - compatible with standard-sized ANSI tolerance drill bits, so there is no need to source proprietary tooling before getting to work.
• Removable design - ideal for temporary anchoring or installations where fixtures may need to be relocated later, reducing rework costs.
• T50 6-lobe drive - reduces driver-bit cam-outs compared to traditional recessed anchor heads, resulting in easier, more controlled installation with less risk of stripping.
• Countersunk head style - allows flush-mount profiles that are not possible with a hex head, and leaves a cleaner surface appearance for exposed through-set applications.
• Serrated teeth on the anchor tip - facilitate cutting into the substrate and reduce installation torque, making the driving process faster and less fatiguing.
• Type 316 stainless steel construction - provides severe-level corrosion resistance for long-lasting performance in harsh, wet, or chemically aggressive environments.
• Driver bit included in each box - means you have the correct tool on hand immediately, with no separate purchase needed to begin installation.

Why This Product

• One anchor for multiple critical load scenarios - qualification for both static and seismic loading conditions means this screw anchor can be specified with confidence across a wide range of structural and code-governed projects, from interior framing connections to seismic retrofit work.
• Severe-environment durability without compromise - Type 316 stainless steel goes beyond standard corrosion protection, making this anchor a dependable long-term solution for coastal installations, outdoor structures, and other settings where moisture or chemical exposure would degrade ordinary fasteners.
• A cleaner finish for exposed or flush applications - the countersunk head sits flush with or below the fixture surface, making this the right choice when aesthetics or clearance requirements rule out a protruding hex head.
• Fast, tool-friendly installation - the combination of a T50 6-lobe drive, serrated cutting tip, and included driver bit means fewer interruptions, less cam-out frustration, and lower installation torque from start to finish.

Specifications

• Model No.: THD37400CS6SS
• Anchor Size: 3/8 in. x 4 in.
• Diameter: 3/8 in.
• Head Type: Countersunk Head
• Head Diameter: 3/8 in.
• Drive Type: T50 6-Lobe
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Drill Bit Diameter: 3/8 in.
• Recommended Fixture Hole Size: 1/2 to 9/16 in.

Approved Applications

• Cracked and uncracked concrete anchoring
• Masonry anchoring applications
• Flush-mount and through-set installations requiring a countersunk profile
• Seismic and wind-governed structural conditions
• Temporary anchoring or applications where fixtures may need to be relocated
• Severe corrosion environments requiring long-lasting resistance

What's Included

Each pack contains (25) Countersunk Titen HD Anchors, Driver bit included in each box.

Frequently Asked Questions

What type of drill bit is required to install the Titen HD screw anchor?

No special drill bit is required. The Titen HD is designed to install using standard-sized ANSI tolerance drill bits, with the hole size being the same as the anchor size - 3/8 in. for this model.

Why choose the Type 316 stainless steel version of the Titen HD over the standard carbon steel version?

The Type 316 stainless steel option provides severe-level corrosion resistance, making it the ideal choice for environments where long-lasting performance is critical, such as outdoor, coastal, or otherwise corrosive conditions. The standard carbon steel Titen HD is intended for dry, interior, noncorrosive environments or temporary outdoor applications only.

What is the advantage of the countersunk head style on this anchor?

The countersunk head allows for flush-mount applications that are not possible with a hex head. It also leaves a cleaner surface appearance for exposed through-set applications, making it ideal wherever a low-profile finish is required.

Can the Titen HD screw anchor be removed after installation?

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

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