The Simpson Strong-Tie SD9112SS-R100 Strong-Drive SD CONNECTOR SS Screw is a stainless-steel connector screw made for fastening approved Simpson Strong-Tie stainless-steel connectors to wood. This is a connector screw designed for fastening structural connectors in wood framing and exterior construction. Model Number: SD9112SS-R100. If you need a cleaner, more controlled alternative to hand-driving nails into connectors, this is the fastener built for that job.

What matters here is not just that it is a #9 x 1-1/2 inch wood screw. This screw was specifically designed as a nail-replacement option in certain Simpson Strong-Tie stainless-steel connectors, and Simpson states it is the only screw approved for that application in those listed connectors. The single-fastener load capacity of the #9 SD SS exceeds the capacity of a 10d common nail, so you are not trading strength for convenience. You are getting a fastener engineered for connector work, not a general-purpose deck screw pressed into service.

The drive and head design are set up for real installation conditions. A 1/4 inch hex head gives positive engagement with a drill or impact driver, which helps when you are working overhead, between joists, or in tight corners where a hammer is just the wrong tool. The 0.370 inch integrated washer increases bearing surface under the head, and the head is stamped for post-installation identification. That might sound minor until you are inspecting a job later and want to confirm the right fastener was used.

Simpson also designed the shank to match the fastener holes in its connectors. That is a big deal for fit and repeatability. With connector fasteners, the geometry matters. A generic screw can fit poorly, sit wrong in the hole, or create questions about approval. This screw is purpose-built for connector installation, which means better alignment in the hardware and less guesswork on the job.

Material choice is another reason this fastener stands out. The SD9112SS-R100 uses Type 316 stainless steel, which is a strong pick for corrosion resistance in severe environments. For exterior framing, coastal exposure, and other jobs where moisture and corrosion are real concerns, that matters more than a flashy coating claim. If your hardware calls for stainless, using the right stainless fastener helps maintain the connector system the way it was intended.

This pack includes 100 screws and a hex driver, so you can get started right away. Each screw has a sharp point, 1-1/4 inch thread length, 0.130 inch shank diameter, and 8-1/2 threads per inch. In practical terms, that means quick starts in wood, predictable driving, and a layout tuned for connector fastening rather than finish appearance. This is a structural fastening product, not a trim screw.

Compatibility matters with a product like this. These screws are tested and approved for use in many popular Simpson Strong-Tie stainless-steel connector products, but not every connector takes every fastener. The right move is to match the connector and approved fastener schedule instead of assuming any stainless screw will work. That is exactly why pros buy connector-specific fasteners like this one.

Who should buy it? Carpenters, deck builders, marine and coastal contractors, remodelers, and serious DIYers doing connector-based framing repairs or upgrades. If you are installing stainless Simpson hardware and want the correct screw for approved applications, this is the one. If you just need a random exterior wood screw, buy something else. This fastener earns its keep when connector approval, corrosion resistance, and installation control actually matter.

Simpson Strong-Tie SD9112SS-R100 Strong-Drive SD CONNECTOR SS Screw for the jobs where the right fastener actually matters

This is the screw you buy when you want an approved stainless connector fastener, not a close-enough substitute.

• Who it's for: Contractors, deck builders, remodelers, and serious DIYers installing approved Simpson Strong-Tie stainless-steel connectors in wood framing.
• Why it stands out: It is purpose-built for connector holes, offers controlled hex-drive installation, and uses Type 316 stainless steel for corrosion resistance in tougher environments.
• Worth knowing: This is a specialized connector screw, not a general construction screw. The value is in using the exact fastener the connector schedule was designed around.

• What is this screw designed for? It is designed for fastening certain approved Simpson Strong-Tie stainless-steel connectors to wood.
• Can it replace nails? Yes. Simpson states this screw is specifically designed to replace nails in certain approved connector applications, and the single-fastener load capacity of the #9 SD SS exceeds a 10d common nail.
• What drive does it use? It uses a 1/4 inch hex drive with a hex head and integrated washer.
• Is it suitable for exterior use? Yes. It uses Type 316 stainless steel and is listed for exterior use, making it a strong option where corrosion resistance is important.