The Simpson Strong-Tie SD9112R500 Strong-Drive SD Connector Screw is a load-rated connector screw for wood framing and structural connector installation. This is a connector screw designed for fastening Simpson Strong-Tie connectors to wood framing. Model Number SD9112R500. If you are installing hangers, ties, and similar hardware and want better placement control than a nail gives you, this is the fastener built for that job.

This specific version is a #9 x 1-1/2 inch mechanically galvanized screw packed in a 500-count box. It uses a 1/4 inch hex drive, has a hex washer head with an integrated washer around 0.370 inch in diameter, and a sharp point for easier starts in wood. The shank diameter is sized to match connector holes, which is a big reason these screws are used in approved hardware applications instead of swapping in a generic construction screw.

What separates the Strong-Drive SD line from ordinary wood screws is that it was built around connector performance, not just pull-down speed. Simpson Strong-Tie states this screw is specifically designed to replace nails in certain Simpson Strong-Tie connectors and is the only screw approved for that application in those cases. For installers, that means less guesswork. You are not trying to decide whether a random exterior screw will seat right, bear correctly in the hole, or meet the connector load path requirements.

The 1/4 inch hex head makes a practical difference on the job. It gives you a more positive drive than a Phillips or star recess when you are working at an angle, overhead, or inside a crowded framing bay. The integrated washer head spreads bearing force better at the connector face and helps the fastener sit cleanly in the hardware. Simpson also stamps the head with identification marks, which makes post-install inspection easier when you need to verify what was used.

The mechanically galvanized Class 55 coating is another reason this fastener matters. It is intended for interior and many exterior applications and is recommended for use with certain preservative-treated woods. If you are building decks, covered exterior framing, or other projects where connector corrosion resistance matters, using the specified coated fastener is part of doing the job right. The screw is also heat treated for a balance of ductility and strength, so it is built for connector work rather than light-duty trim fastening.

Packaging matters too, and this box is set up for real production work. With 500 screws included, it makes sense for contractors, framers, remodelers, deck builders, and serious DIY users working through multiple connectors on one project. A hex driver is included, so you can get started without hunting down the right bit first.

The best buyer for this screw is someone installing approved Simpson Strong-Tie framing hardware and who wants the speed and control of a drill or impact driver without stepping outside the connector requirements. If you are doing structural framing, deck connections, retrofit work, or hardware-heavy repairs, this is the kind of screw that saves time while keeping the installation aligned with the connector manufacturer's intent.

Simpson Strong-Tie SD9112R500 Strong-Drive SD Connector Screw for Real Connector Work

If you are fastening Simpson hardware and want a screw that belongs there, this is the right one to reach for.

• Who it's for: Framers, deck builders, remodelers, and serious DIY users installing Simpson Strong-Tie connectors in wood framing.
• Why it stands out: It is purpose-built for connector holes, uses an easy-driving 1/4 inch hex head, and carries the approval language that generic construction screws do not.
• Worth knowing: This is a specialized connector screw, not a one-screw-for-everything fastener. Use it where the connector schedule calls for it and it will make your install cleaner and easier.

• What kind of screw is this? This is a load-rated connector screw designed for use with many Simpson Strong-Tie connectors in wood framing applications.
• What size is the screw? This model is a #9 x 1-1/2 inch screw with a 1/4 inch hex drive.
• Is it suitable for exterior use? Yes, it has a mechanically galvanized Class 55 coating intended for interior and many exterior applications, including certain preservative-treated wood uses noted by Simpson Strong-Tie.
• How many screws come in the box? This package contains 500 screws.