Simpson Strong-Tie DTT Series DTT1Z-KT Deck Tension Tie Kit, 7-1/8 in L, 1-1/2 in W, Steel, ZMAX

The DTT1Z and DTT1SS deck tension ties provide strong, reliable lateral load connections that help decks meet the International Residential Code (IRC) requirement for a 750 lb connection to the supporting structure at four locations per deck, as outlined in the 2015, 2018, 2021 and 2024 IRC R507.9.2(2). These connectors are ideal for both new construction and retrofits, offering a safe and code-compliant way to secure decks to homes-without the need to access interior floor joists. With models available in ZMAX and Type 316 stainless steel, the DTT1 Series offers flexibility for a range of environmental conditions. The DTT1Z is a ZMAX-coated tension tie designed for typical deck applications. It installs on the narrow or wide face of a single 2X joist using Strong-Drive SD connector screws or nails and can be anchored with a 3/8 in bolt, lag screw (with washer) or Strong-Drive SDWH Timber-Hex HDG screw. For added convenience, the DTT1Z is also available in the DTT1Z-KT kit, which includes (4) DTT1Z connectors, (4) Strong-Drive SDWH Timber-Hex HDG screws (SDWH27800G) and (26) #9 x 1 1/2 in Strong-Drive SD connector screws providing a complete hardware solution for one code-compliant deck installation.