Simpson Strong-Tie Concrete Anchors

Simpson Strong-Tie concrete anchors fasten wood, post bases and equipment to concrete or masonry. Buy the anchor for the connection underneath the load: Titen Turbo gives you concrete and masonry screws, while Titen HD gives you heavy-duty anchorage you can fully remove. That removability pays off when shop racks move and you want the old anchors out of the floor.

Titen Turbo concrete screws

For an anchor screw for concrete or masonry, start with Simpson Strong-Tie Titen Turbo. Choose the diameter, length and head to suit what you’re fastening. The head is part of that choice, so settle how it bears against the attachment before choosing by length alone.

If you’re shopping for a 3/8-inch concrete anchor, move to the 3/8-inch by 4-inch Titen HD below. Keep those two product lines straight when you put the job together: Titen Turbo covers the concrete-screw choice here, and Titen HD covers the heavier connections.

Titen HD screw anchors for wood, racks and equipment

Buy Simpson Strong-Tie Titen HD for sill plates, racking and heavy-equipment connections. It is fully removable and installs with an impact driver or impact wrench. Its serrated tip helps cut the threads and reduces installation torque. Those are useful features when you’ve got a run of connections to make, especially during Montana’s fall push to close a building in before freezing weather.

Titen HD is code listed for cracked and uncracked concrete and uncracked masonry. That’s the distinction to carry into a repair job: choose by the material you’re anchoring into, including its condition. Around Libby, foundation and structural repairs following the December 2025 flood make that inspection part of choosing the anchor.

These Titen HD sizes give you several diameter and length combinations:

Simpson Strong-Tie screw anchor	Diameter	Length
Titen HD	1/2 inch	6 inches
Titen HD	1/2 inch	8 inches
Titen HD	1/2 inch	5 inches
Titen HD	3/8 inch	4 inches
Titen HD	5/8 inch	6 inches
Titen HD	5/8 inch	8 inches

Choose diameter for the connection’s load and hardware, then length for the material you’re fastening through and the required embedment into concrete. The 5-, 6- and 8-inch lengths in the 1/2-inch diameter give you room to match those two dimensions. Buying the longest anchor by habit skips the concrete thickness and connection details that actually decide the fit.

A screw anchor permits a closer minimum edge distance than a wedge anchor. That’s a good reason to choose Titen HD for sill-plate work where the foundation edge limits your layout. Keep the actual edge distance and spacing part of the connection design.

For removal, Titen HD unscrews completely. Choose it over a concrete wedge anchor bolt for racks you expect to relocate: you can remove the screw instead of grinding down an abandoned wedge-anchor head. That makes it a strong pick for Montana’s winter shop-renovation season, when rearranging equipment means working around the existing slab.

The 1/4-inch by 3-1/4-inch flat-head Titen Turbo

Buy the Simpson Strong-Tie Titen Turbo in a 1/4-inch by 3-1/4-inch flat-head version for a concrete or masonry fastening detail that takes that diameter, length and head. This is the concrete-screw choice to match to a flat-head attachment.

Keep total screw length separate from embedment. Material between the head and the concrete uses up part of that 3-1/4-inch length. Account for it before buying, and you’ll choose a screw that reaches the required depth instead of merely reaching through the attachment.

Simpson Strong-Tie anchor systems also include bolts and adhesives: compared with Titen HD screw anchorage, SB bolts serve holdowns calling for 5/8-inch, 7/8-inch or 1-inch anchors, and SSTB bolts serve holdowns and Strong-Wall shearwalls. For a connection using threaded rod or rebar in cracked or uncracked concrete, AT-3G hybrid acrylic adhesive provides a different anchoring method from a Titen HD screw.

Stainless-steel Titen HD for exposed post bases

For an exposed post-base connection where corrosion is a concern, stainless-steel Simpson Strong-Tie Titen HD is the choice. It is intended for severe exposure and is an option for installing post bases. Pair it with stainless-steel connectors or Simpson Strong-Tie connectors with corrosion-resistant finishes. Spring snowmelt can keep Montana connections wet well after the snow disappears, so exposure belongs in the buying decision.

To anchor a 4x4 or 6x6 wood post to concrete, choose the post base for the post and the forces the connection must carry, then match the concrete anchor to that base. Post width alone doesn’t determine anchor diameter. For a fence post, also settle whether you’re attaching to existing concrete or setting the post in the ground; those are different jobs.

Follow local anchoring requirements for structural connections. The active Mission Fault in Mission Valley and Great Falls winter gusts of 30–40 mph are real reasons similar-looking post and wall connections can need different anchorage.

For tilt-up wall braces, the Simpson Strong-Tie Titen HD in a 3/4-inch by 7-inch size has a 1-inch unthreaded section beneath the head to accommodate the brace connection.

Among smaller concrete screws, the Simpson Strong-Tie Titen Turbo in silver includes a 3/16-inch by 1-3/4-inch star flat-head version.

How to anchor wood to concrete

Start with the whole connection. A sill plate, post base and holdown each transfer force differently. A holdown connects the wood framing to its anchorage; the holdown itself is not the concrete anchor. Match the anchor, connector and wood fasteners as one assembly, because the weakest connection limits what the assembly can carry.

For installation in existing concrete, establish hole diameter, hole depth, embedment and spacing for the selected anchor before drilling. Use a carbide-tipped bit with a hammer drill in hammer-and-rotation mode. The hammering breaks up the concrete, and the bit’s flutes carry drilling dust out. Hole preparation and setting procedures belong to the anchor type you’ve chosen; a screw, expansion anchor and adhesive connection are different jobs.

For anchor bolts in a new concrete foundation, settle placement with the sill-plate or holdown layout before the pour. That’s when you can line up the anchorage with the framing it needs to hold.

The Pick

Buy Simpson Strong-Tie Titen HD for sill plates, racks and heavy-equipment connections, especially where full removal matters. Choose among the 3/8-inch by 4-inch, 1/2-inch and 5/8-inch sizes by the connection diameter and required length.

Buy the 1/4-inch by 3-1/4-inch flat-head Titen Turbo for concrete or masonry screw fastening that takes a flat head. Choose stainless-steel Titen HD for exposed post-base connections where corrosion resistance drives the decision.

Frequently Asked Questions

How do you anchor wood to concrete?

Match your concrete anchor, connector and wood fasteners as one assembly. In a holdown connection, the connector attaches to the wood framing and transfers force to the foundation anchorage. The weakest part limits what the assembly can carry, so a larger anchor alone won’t fix a weak connection above it.

How do you install an anchor in concrete?

The installation method depends on the anchor you’re using. For drilling concrete, use a carbide-tipped bit with a hammer drill set to hammer-and-rotation mode. Titen HD installs with an impact driver or impact wrench, and its serrated tip helps cut while reducing installation torque.

How do you remove an anchor bolt from concrete?

With Titen HD, you can unscrew the anchor and remove it completely. If you’re planning racking that may move later, that removability saves you from grinding down abandoned wedge-anchor heads.

How do you anchor a wood post to concrete?

Use a post base to connect your post to the concrete, then match the anchor to that connection. Stainless-steel Titen HD is an option for post bases where severe exposure makes corrosion a concern. Pair it with a stainless-steel connector or a Simpson Strong-Tie connector with a corrosion-resistant finish.