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A map and contact information for our branches, offices, factories, distribution centers and warehouses located around the world.

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Explore our dealer locator application to find an official dealer of Simpson Strong-Tie products near you in the United States and Canada.

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dtt1z-installation

Step-by-step instructions to guide you through the installation of our DTT1Z holdown.

DTT1Z Installation Guide

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Welcome to the Simpson Strong-Tie homepage showcasing our resources, products and services designed to help people build safer, stronger structures.

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                <h2>Tools</h2>
                <img  src="https://embed.widencdn.net/svg/ssttoolbox/mmcxxthchr/C_TOOL-LightDutyDrill_ProdIll_Ill_Other_C0.svg" alt="Light Duty Drill" class="fastener-tool-img">
                <div class="caption">Impact Driver</div>
                
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                <img  src="https://embed.widencdn.net/svg/ssttoolbox/sfcblesj2q/F_NutDriver_InstSeq_Ill_Inst_Nut-driver_C0.svg" alt="Nut Driver" class="fastener-tool-img">
                <p class="caption">Use 3/8" driver.<br>
                <span class="spanish-text">Use un destornillador de 3/8".</p>
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                <h2>Fasteners</h2>
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                <div class="caption">Strong-Drive<sup>®</sup> SDWH TIMBER-HEX HDG Screw</div>
                
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                <img src="https://embed.widencdn.net/svg/ssttoolbox/lwewpiy1ym/F_SD9112_InstSeq_Ill_Inst_Product_C0.svg" alt="#9 x 1 1/2&rdquo; Strong-Drive" class="fastener-tool-img">
                <div class="caption">#9 x 1 1/2" Strong-Drive<sup>®</sup> SD CONNECTOR Screw</div>
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        <h2>Installation Steps</h2>
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                        <img src="https://embed.widencdn.net/svg/ssttoolbox/lmvsfqcgum/C_DTT1Z_InstSeq_Ill_Inst_Screwing-to-joist_C0_STEP02.svg" alt="DTTZ1 Installation, Step 2">
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                    <h1>DTT1Z Holdown Installation Guide</h1>
                    <p>The DTT1Z fastens to the narrow or wide face of a single 2x with Strong-Drive SD Connector screws or nails and accepts a 3⁄8" bolt, anchor bolt or lag screw (washer required) or can be installed with the Strong-Drive SDWH Timber-Hex HDG screw with an integral washer.</p>
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literature-and-links-canada

Resources including links to literature and information for structural residential and commercial building in Canada.

Literature and Links for Canada