Connector Approved The Simpson Strong-Tie Strong-Drive SD9112R100 SD Connector Screw is specifically designed for use in many Simpson Strong-Tie connectors. That matters because connector fasteners are not a place to guess. Use the screw that was made and approved for the hole pattern and the load path. Better Installation Control A 1/4 inch hex drive and integrated washer head give you a more controlled install than swinging a hammer in awkward spots. It is a smart option when access is tight or you want cleaner, more consistent fastening. Exterior Rated Coating The mechanically galvanized Class 55 coating is intended for interior and many exterior connector applications, including use with certain preservative-treated wood. That gives you a connector screw that fits real framing conditions, not just dry indoor work.
The Simpson Strong-Tie Strong-Drive SD9112R100 SD Connector Screw is a #9 x 1-1/2 inch connector screw built for fastening Simpson Strong-Tie metal connectors to wood framing. This is a connector screw designed for installing structural connectors in wood framing applications. Model Number: SD9112R100. If you need a fastener for approved connector installation and want more control than a hand-driven nail, this is the right kind of screw to look at.
What sets this screw apart is that it is not just a general wood screw with a hex head. Simpson Strong-Tie specifically designed the shank to match the fastener holes in its connectors, and the company states this is the only screw approved for certain connector-replacement applications. For this #9 version, the SD screw is intended to replace a 10d nail in applicable Simpson Strong-Tie connector installations. That makes it useful when you need the connector fastener the engineer or manufacturer expects, but want to install it with a driver instead of a hammer.
The 1/4 inch hex drive helps reduce slipping during install, and the integrated 0.370 inch washer head spreads bearing over the connector face. In plain terms, that means easier starts, better bit engagement, and a head style that seats cleanly against the connector without needing a separate washer. Simpson also stamps the head for identification after installation, which is helpful when inspections or callbacks require you to confirm the fastener type.
On the material side, this screw uses a mechanically galvanized Class 55 coating and optimized heat treating for ductility and strength. That combination matters in connector work because the fastener needs to handle load while still being tough enough for installation without acting brittle. The coating is recommended for use with certain preservative-treated woods and is recognized by Simpson Strong-Tie for many interior and exterior applications.
The size on this specific variant is #9 with a 1-1/2 inch overall length, 0.130 inch shank diameter, 8-1/2 threads per inch, and 1-1/8 inch thread length. Those numbers are not trivia. They are part of why this fastener fits the connector hole correctly and performs as intended in approved applications. This is why connector screws should be chosen by exact model, not by whatever similar screw is already in the trailer.
This pack includes 100 screws, which makes sense for small framing runs, connector retrofits, punch-list work, or keeping approved fasteners on hand for repairs. Simpson also notes that a hex driver is included. For contractors, remodelers, and serious DIY users working with hurricane ties, hangers, and similar connector hardware, this fastener is mainly about using the right screw in the right place and avoiding the problems that come from substituting generic hardware.
This screw is built for connector installs where access is awkward, overhead space is limited, or you simply want better control than hand-driving nails. A driver lets you place the fastener accurately and seat it consistently in the connector.
Connector fasteners need to do more than just bite wood. They also need to fit the connector properly. The SD connector screw uses a shank specifically designed to match Simpson Strong-Tie connector holes, which is a big reason it is approved where generic screws are not.
The mechanically galvanized Class 55 coating gives this connector screw broader jobsite usefulness than plain interior-only hardware. It is tested and approved for many interior and exterior connector applications and is recommended for use with certain preservative-treated wood.
| Screw Size | #9 |
|---|---|
| Length | 1-1/2 in. |
| Drive Type | 1/4 in. Hex |
| Head Type | Hex Head with integrated washer |
| Head Diameter | 0.370 in. |
| Shank Diameter | 0.130 in. |
| Thread Length | 1-1/8 in. |
| Thread Pitch | 8-1/2 TPI |
| Point Type | Sharp Point |
| Coating | Mechanically Galvanized, Class 55 |
| Material | Steel |
| Packaging Quantity | 100 |
Connector System Designed for use in many Simpson Strong-Tie connectors for interior and exterior applications. Driver Interface Uses a 1/4 inch hex drive. A hex driver is included. Approved Replacement Use The #9 SD connector screw is intended to replace a 10d nail in certain approved Simpson Strong-Tie connector applications.
Carpentry Construction Remodeling General Contracting Connector Installation Wood Framing Hurricane Ties Hangers and Brackets
Do not swap in a generic hex-head wood screw just because it fits the hole. With connector hardware, the exact fastener matters. If the plan or connector schedule calls for an SD screw, use the exact Simpson model that matches the approved application.
Tool Nut’s Take
This is the screw you buy when you care more about approved connector performance than saving a few bucks with a look-alike fastener.
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