Key Features

Nail Replacement The Simpson Strong-Tie SD9212R100-R Strong-Drive SD Connector Screw is specifically designed to replace nails in certain Simpson Strong-Tie connectors. That matters when you want approved fastening with more control than swinging a hammer in a tight spot. Hex Head Control The 1/4 inch hex head and integrated washer help reduce cam-out and keep installation moving. It is easier to drive cleanly into connector holes, especially overhead or between framing members. Built for Treated Wood The mechanically galvanized Class 55 coating is recommended for certain preservative-treated wood applications and is recognized as an alternate to hot-dip galvanized in ESR-3046. For exterior connector work, that coating is a big part of why these screws are widely used.

Overview

The Simpson Strong-Tie SD9212R100-R Strong-Drive SD Connector Screw is a #9 x 2-1/2 inch connector screw made for fastening approved Simpson Strong-Tie metal connectors to wood framing. This is a connector screw designed for installing structural connectors in wood-to-wood applications. Model Number: SD9212R100-R. If you are building decks, reinforcing framing, or installing hangers and ties where hammer access is awkward, this screw gives you a code-recognized alternative to driving nails by hand.

What separates this screw from an ordinary exterior wood screw is that it was built around the connector, not just the wood. Simpson states this is the only screw approved for replacing nails in certain Simpson Strong-Tie connectors, and the #9 SD screw is intended to replace 10d nails in those applications. That is the real selling point here. You are not guessing whether a generic fastener is close enough. You are using a fastener that was designed, tested, and approved around the connector hole pattern, the shank diameter, and the load requirements.

The head and shank design are jobsite-friendly in a way that makes a difference once you start driving a lot of them. The 1/4 inch hex head gives you positive bit engagement, which helps when you are working overhead, working off a ladder, or driving into awkward corners around joist hangers and ties. The 0.370 inch integrated washer gives the head a broad bearing surface, helping the screw seat properly against the connector without needing a separate washer. Simpson also stamps the head for identification after installation, which is useful when you need to verify what fastener was used.

The size on this version is #9 x 2-1/2 inches, with a 0.130 inch shank diameter, 1-1/8 inch thread length, and a sharp point. That combination is aimed at connector fastening where you need the unthreaded portion and the shank geometry to fit connector holes correctly while still pulling into wood cleanly. The sharp point helps start the screw quickly, and the heat-treated steel construction is engineered for ductility and strength rather than just brute hardness. In plain terms, it is made to hold up in structural connector work where cheap screws can snap or fight you during installation.

For exterior and treated-lumber work, the coating matters. This screw uses a mechanically galvanized Class 55 coating. Simpson notes that this coating meets ASTM B695 Class 55, is recommended for use with certain preservative-treated woods, and is recognized as an alternate to hot-dip galvanized in ESR-3046. That makes it a practical choice for many common deck and exterior framing connector applications where corrosion resistance is part of the conversation, not an afterthought.

This pack includes 100 screws, which makes sense for connector-heavy jobs where you want one box to cover a decent run of hangers, ties, or reinforcement work without mixing fastener types. A hex driver is also included, so you can get started right away with a compatible drill or impact driver. The drive type is 1/4 inch hex, the head type is hex head, and the point type is sharp point, all of which work together to make installation faster and more controlled than pounding nails into tight connector locations.

Who should buy it? Carpenters, deck builders, remodelers, framers, and serious DIY users working specifically with Simpson Strong-Tie connectors. If you need a general-purpose wood screw, this is not that. If you need the right fastener for approved connector installation, especially where nailing is slow or awkward, this is the right category of screw and a much smarter choice than trying to make a generic deck screw do a structural connector job it was never designed for.

Get Connector Fastening Done in Tight Spots

This is where connector screws earn their keep. When a hammer swing is awkward or you need better placement control, the hex-drive format lets you install the fastener cleanly with a drill or impact driver.

• Designed as a nail replacement in certain Simpson Strong-Tie connectors
• 1/4 inch hex drive helps reduce cam-out during installation
• Hex driver is included

Built Around the Connector, Not Just the Wood

The shank geometry and head design are made to work with Simpson Strong-Tie connector holes and bearing surfaces. That gives you a fastener that fits the application instead of one that is just close enough.

• #9 screw size intended to replace 10d nails in applicable connector installations
• 0.370 inch integrated washer helps the head seat against the connector
• 0.130 inch shank diameter is sized for connector use

Easy to Identify After Installation

Small detail, big advantage: the head is stamped for identification. On inspection, repair, or future work, that makes it easier to confirm the fastener type without guessing what was used.

• Hex head with integrated washer
• Sharp point for quick starts in wood
• Mechanically galvanized Class 55 coating for interior and most exterior applications

What’s in the Box

• (100) Simpson Strong-Tie SD9212R100-R #9 x 2-1/2 in. Strong-Drive SD Connector Screws
• (1) Hex driver

Key Specifications

Compatibility

Connector System Designed for use in many Simpson Strong-Tie connectors. Simpson states this is the only screw approved for replacing nails in certain Simpson Strong-Tie connector applications. Driver Interface Uses a 1/4 inch hex drive and includes a matching hex driver for installation. Wood Applications Approved for wood-to-wood connector fastening and recommended for interior and most exterior applications, including certain preservative-treated wood uses.

Built For

Carpentry Deck Building Framing Remodeling General Contracting Connector Installation Exterior Wood Construction DIY / Hobbyist

Pro Tip

Use these when you need to fasten hangers or ties where a full hammer swing is a pain. Drive them until the integrated washer seats flat on the connector face. Do not swap in a generic deck screw just because it fits the hole.

Tool Nut’s Take

Tool Nut’s Take

Simpson Strong-Tie SD9212R100-R Strong-Drive SD Connector Screw for approved connector work

This is the screw you buy when you want the right fastener for Simpson connector installation, not a maybe-good-enough substitute.

• Who it’s for: Framers, deck builders, remodelers, and DIY users installing Simpson Strong-Tie connectors in wood framing.
• Why it stands out: It is specifically designed and approved for certain connector applications, uses a hex head that is easier to drive than nails are to swing, and the Class 55 galvanized coating makes sense for many exterior jobs.
• Worth knowing: This is a specialty connector screw, not a general wood screw. The value here is using the approved fastener for the connector, especially when you need control in tight spaces.

Common Questions

• Can this screw replace nails in Simpson Strong-Tie connectors? Yes. Simpson states the SD connector screw is specifically designed to replace nails in certain Simpson Strong-Tie connectors, and the #9 version is intended to replace 10d nails in applicable installations.
• Is this screw suitable for exterior use? Yes, for interior and most exterior applications. It uses a mechanically galvanized Class 55 coating that Simpson recommends for certain preservative-treated wood applications.
• What driver does it use? It uses a 1/4 inch hex drive, and a hex driver is included in the package.
• What is the size of this screw? This model is a #9 x 2-1/2 inch screw with a sharp point and a 1-1/8 inch thread length.