The Simpson DTT2SS Stainless-Steel Deck Tension Tie is a 14-gauge stainless-steel connector built for guardrail post connections into deck framing and lateral-load connections from the deck to the adjacent structure. Engineered by Simpson for high and severe corrosion resistance, this connector is the go-to solution for seaside and coastal environments as well as applications calling for more corrosive preservative-treated lumber formulations. It fastens to the wide face of a single or double 2x framing member using included 1/4 in. x 1 1/2 in. stainless-steel Strong-Drive SDS Heavy-Duty Connector screws, delivering a stronger, safer connection than nails, lag screws, or bolts.

Key Features

• No interior floor joist access required - installs entirely from outside the structure, saving time and reducing disruption during deck construction or retrofit projects.
• Ties guardrail posts directly into deck framing - creates a secure, engineered connection at the post base that resists the lateral forces guardrails must handle.
• Stronger and safer than nails, lag screws, or bolts - provides a superior structural connection that helps prevent a common type of deck failure and supports code-compliant builds.
• Connects the deck ledger to the house framing - resists the lateral loads that can cause decks to pull away from the structure, adding a critical layer of safety at the ledger.
• Made from 14-gauge stainless steel - delivers high and severe corrosion resistance, keeping the connector reliable in coastal air, salt spray, and harsh preservative-treated lumber environments.
• Compatible with single or double 2x framing members - offers installation flexibility across a wide range of common deck framing configurations.
• Includes 1/4 in. x 1 1/2 in. Strong-Drive SDS Heavy-Duty Connector screws - everything needed for a complete, code-ready installation arrives in one package with no separate fastener sourcing required.

Why This Product

• Purpose-built for high-exposure environments - the stainless-steel construction provides high and severe corrosion resistance that standard coatings cannot match, making this connector the right choice where moisture, salt air, or aggressive treated lumber formulations are a concern.
• Addresses two critical deck failure points in one connector - by tying both guardrail posts into deck framing and the deck into the house at the ledger, this single product helps close the two most common gaps in deck structural integrity.
• Eliminates the hassle of interior access - unlike methods that require working from inside the house to reach floor joists, this connector installs from the exterior, making it practical for both new construction and existing deck upgrades.
• A complete, hardware-included solution - the included stainless-steel Strong-Drive SDS screws are matched specifically to this connector, so installers have the correct fasteners on hand for a structurally sound, code-consistent installation from the start.

Specifications

• MPN: DTT2SS
• Material: Stainless Steel
• Finish: Stainless Steel
• Gauge: 14
• Member Size: Single or double 2x
• Install With: Install with 1/4 in. x 1-1/2 in. stainless-steel Strong-Drive SDS Heavy-Duty Connector screws (included)
• Depth: 3-1/4 in.
• Height: 6-15/16 in.
• Seat Depth: 1-5/8 in.
• Centerline: 13/16 in.
• Screw Offset: 3/16 in.
• Country of Origin: United States

Approved Applications

• Deck guardrail post connections into deck framing
• Lateral-load connection from the deck to the adjacent structure
• Seaside and coastal environments with high exposure to moisture and salt air
• Applications using more corrosive preservative-treated lumber formulations
• Ledger connections requiring a stronger, safer tie between deck and house

What's Included

Each pack contains (1) DTT2SS Deck Tension Tie, 1/4 in. x 1-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws.

Downloads and Resources

• See Load Tables & SPECS : Specifications

Frequently Asked Questions

Why choose the stainless-steel DTT2SS over a standard deck tension tie?

The DTT2SS is made from stainless steel to provide high and severe corrosion resistance, making it the best choice for seaside applications or those that require more corrosive preservative-treated lumber formulations where standard coatings may not provide adequate protection.

What fasteners are required to install the DTT2SS?

Install with 1/4 in. x 1-1/2 in. stainless-steel Strong-Drive SDS Heavy-Duty Connector screws. These screws are included with the connector, so no separate fastener purchase is necessary.

What framing members is the DTT2SS compatible with?

The DTT2SS is designed to fasten to the wide face of a single or double 2x framing member, providing a versatile fit for common deck framing configurations.

Does installing the DTT2SS require access to the floor joists inside the house?

No. One of the key advantages of the DTT2SS is that it eliminates the need to access the floor joists inside the house, simplifying the installation process for both new construction and retrofit applications.

Related Products

• DTT2SS-SDS2.5