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#9 x 1-1/2" Strong-Tie SD9112MB Connector Screw - Class 55 Galvanized, Pkg 3000

ICC Certified

Regular price $33499
Ships FREE Nov 16 when you order now

Description

The Simpson Strong-Tie® SD Connector Screw is the only screw specifically engineered and approved to replace nails in designated Simpson Strong-Tie® connectors. Whether you're framing, installing hangers, or working in tight spaces where a hammer isn’t ideal, this screw delivers superior holding power, speed, and code-compliant performance.

The SD9 and SD10 screws replace 10d and 16d nails respectively, providing stronger single-fastener load capacities than the nails they replace. Each screw features a 1/4" hex head with an integrated washer stamped for easy post-installation inspection. The heat-treated shank is precision-sized to match connector holes, ensuring a tight, secure fit every time.

Finished with a corrosion-resistant galvanized coating, the SD Connector Screw is suitable for both interior jobs and most exterior environments.

Features:

  • Only Screw Approved for Use in Simpson Strong-Tie® Connectors: The SD screw is designed to replace nails and exceed their load capacities in tested applications.
  • More Strength, More Control: Outperforms 10d and 16d nails in single-fastener strength, with easier, more precise installation.
  • Integrated Washer Head: 1/4" hex head with 0.370" diameter washer is stamped for easy identification on the job.
  • Corrosion Resistant: Galvanized finish for long-term durability in interior and many outdoor settings.
  • Convenient Installation – Ideal for tight spaces or overhead work where hammering is a hassle. Hex driver included.

Specifications

Diameter: #9
Length: 1-1/2"
Thread Length: 1-1/8"
Head Diameter: .370"
Thread Type: Coarse Threads
Drive Type: 1/4" Hex
Head Type: Hex Head
Point Type: Sharp Point
Material: Carbon Steel
Finish: Class 55 Mechanically Galvanized
Manufacturer Name: Simpson Strong-Tie
Quantity: 3,000

Reviews
(10)

Customer Reviews

Based on 10 reviews
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P
PT
Ample supply & fast shipping

Very happy with the ability to buy the quantities I needed for my fence project. The shipping time was short and the hardware was received without issue. Will use again in the future and will not waste time with big box stores.

T
Tom Bergeron
Can't go wrong here.

Huge inventory available with direct delivery and reasonable pricing.

F
Flash
Satisfactory

Do the job as advertised

G
Gabrielle Bourgault-Kennaley
great product

great product and shipped quickly

J
Justin

Excellent product more than expected

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  • Person using a drill on a piece of wood with protective gloves.

    Serious Strength and Reliability

    Engineered for demanding projects, Structural Screws deliver outstanding load-bearing power—far more than standard screws—so you can trust your work. Whether it’s a deck, framing or outdoor structure, you can trust it will stay solid and secure for years.

  • Drilling structural screws into wooden planks with a power drill.

    Fast, Effortless Installation

    Self-tapping tips create their own hole, eliminating pre-drilling and speed up installation. Deep, aggressive threads bite firmly into the wood for superior holding power that resists loosening over time. Get a stronger build with less effort.

  • Metal corner brace on wooden beams with a drill bit inserted, indicating construction or woodworking activity.

    Professional-Strength Connector Screws

    Designed to replace nails in approved Simpson Strong‑Tie connectors, Connector Screws deliver superior holding power while being faster and more precise to install. Ideal for contractors and builders who need reliable, code-compliant connections.

Broad selection, fast delivery

Our footprint

Our nationwide network of distribution facilities offers more product selection and faster delivery times. So far we’ve made remarkable progress in our expansion efforts, effectively doubling our capacity by adding a new 80,000 sq. ft. warehouse in Simpsonville, South Carolina, in addition to our existing 136,400 sq. ft. facility in Urbana, Iowa.

Broad selection, fast delivery

Our experience

We pride ourselves on delivering a user-friendly, high quality experience online and over the phone. Our knowledgeable team of experts is readily available via phone to assist with product questions and custom pricing inquiries. We’re available Monday thru Friday from 7:00 AM – 5:00 PM CST. We look forward to supporting you on your next job.

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