The Simpson DTT2SS-SDS2.5 Deck Tension Tie from Simpson is a 14-gauge stainless-steel connector engineered for two critical deck applications: securing guardrail posts to deck framing and creating lateral-load connections between the deck and the adjacent structure. Built for high-exposure and severe-corrosion environments - including seaside installations and projects using more corrosive preservative-treated lumber formulations - this connector arrives ready to install with stainless-steel Strong-Drive SDS Heavy-Duty Connector screws included, so there are no additional fastener purchases required.

Key Features

• Eliminates the need to access floor joists inside the house - simplifies installation significantly, saving time and avoiding disruptive interior work.
• Ties the guardrail post into deck framing - creates a code-compliant, structurally sound post-to-framing connection that supports guardrail safety.
• Stronger and safer than nails, lag screws, or bolts - delivers a superior tension connection that reduces risk and improves overall deck structural integrity.
• Ties the deck into the house for a stronger, safer ledger connection - addresses one of the most critical structural points on any deck by reinforcing the deck-to-house attachment.
• Helps prevent a common type of deck failure - engineered specifically to resist the tension forces that cause decks to pull away from structures, adding a meaningful safety margin.
• 14-gauge stainless-steel construction - provides high and severe corrosion resistance, making this connector a reliable long-term choice in harsh outdoor conditions.
• Includes 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws - matching stainless-steel fasteners are in the box, ensuring a fully compatible, corrosion-resistant installation from the start.
• Compatible with single or double 2x framing members - offers installation flexibility across a range of common deck framing configurations.

Why This Product

• Purpose-built for high-corrosion environments: The stainless-steel material and finish make this deck tension tie the right call for coastal and seaside projects, or any application involving more corrosive preservative-treated lumber - situations where standard steel connectors fall short over time.
• A complete, ready-to-install solution: The included stainless-steel Strong-Drive SDS Heavy-Duty Connector screws are matched to the connector, so installers have everything needed for a fully compatible, corrosion-resistant connection without sourcing separate fasteners.
• Addresses two of the most structurally important deck connections in one product: Whether the priority is a secure guardrail post tie or a dependable lateral-load ledger connection, this connector is designed and approved for both critical applications, reducing the need for multiple connector types.
• Simpler installation without interior access: Because the DTT2SS-SDS2.5 eliminates the need to reach floor joists from inside the house, contractors and DIYers can complete a structurally superior connection entirely from the exterior - saving labor and avoiding disruption to finished interior spaces.

Specifications

• MPN: DTT2SS-SDS2.5
• Material: Stainless Steel
• Finish: Stainless Steel
• Gauge: 14
• Member Size: Single or double 2x
• Install With: Install with 1/4 in. x 2-1/2 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 to deck framing
• Lateral-load connections from the deck to the adjacent structure
• Seaside and high-exposure environments
• Applications using more corrosive preservative-treated lumber formulations

What's Included

Each pack contains (1) DTT2SS-SDS2.5 Deck Tension Tie, 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws.

Downloads and Resources

• See Load Tables & SPECS : Specifications

Frequently Asked Questions

Why is stainless steel the right choice for this 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 and installations where more corrosive preservative-treated lumber formulations are used or where the connector will be exposed to harsh environmental conditions.

What fasteners are required to install the DTT2SS-SDS2.5, and are they included?

The DTT2SS-SDS2.5 installs with 1/4 in. x 2-1/2 in. stainless-steel Strong-Drive SDS Heavy-Duty Connector screws, which are included with the connector.

What member sizes is the DTT2SS-SDS2.5 compatible with?

The DTT2SS-SDS2.5 is designed for use with single or double 2x framing members.

How does the DTT2SS-SDS2.5 improve deck safety compared to traditional fasteners?

The DTT2SS-SDS2.5 is stronger and safer than nails, lag screws, or bolts. It ties the guardrail post into the deck framing and connects the deck to the house for a stronger, safer ledger connection, helping to prevent a common type of deck failure while eliminating the need to access the floor joists inside the house.

Note: Product dimensions and/or Screw or Bolt holes may differ from picture.