The Simpson MIU5.12/18 Face-Mount I-Joist Hanger is a purpose-built structural connector engineered for commercial framing, high-load I-joist connections, and double I-joist assemblies where dependable load transfer is non-negotiable. Sized at 5 x 18 to match demanding joist specifications, this face-mount hanger features positive-angle nailing technology and speed prongs that work together to simplify positioning and accelerate installation without sacrificing structural integrity. For contractors and engineers tackling heavy structural framing applications, the MIU5.12/18 delivers a capable, code-conscious connection solution.

Key Features

• Positive-Angle Nailing Technology - Allows nails to be driven at an ergonomic angle that reduces flange splitting risk, helping crews work faster while protecting the integrity of the I-joist connection.
• Speed Prongs - Temporarily hold the hanger in place during positioning so installers can work hands-free, cutting setup time and reducing the chance of misalignment on the jobsite.
• No Web Stiffeners Required in Standard Configurations - Eliminates a labor-intensive installation step in typical applications, keeping framing schedules on track and reducing material handling on commercial projects.
• Optional Triangle Joist Nail Holes - Provide a straightforward path to enhanced uplift capacity when project conditions demand it; adding four additional 10d x 1 1/2 in. joist nails achieves a total uplift load of 975 lbs. (web stiffeners required for this configuration).
• Double I-Joist Compatibility - Engineered specifically to accommodate double I-joist assemblies in heavy structural applications, expanding versatility across a wide range of commercial framing scenarios.
• 16-Gauge G90 Zinc Galvanized Construction - Combines structural strength with corrosion-resistant protection, supporting long-term performance in the framing environments where this hanger is most commonly specified.

Why This Product

• Built for High-Load Commercial Work - Approved for commercial framing applications and double I-joist assemblies, this hanger is a reliable choice when standard residential connectors are not rated for the job at hand.
• Faster Installation Without Compromising the Connection - The combination of speed prongs and positive-angle nailing reduces time-consuming setup steps and minimizes flange damage, helping crews maintain efficiency on larger framing projects.
• Flexible Uplift Options Within a Single Product - The optional triangle joist nail holes let this hanger adapt to projects with elevated uplift requirements without switching to a different connector, simplifying procurement and on-site inventory.
• Domestic Manufacture from Simpson - Produced by Simpson, a widely recognized name in structural connectors, and made in the United States, giving specifiers and contractors confidence in consistent quality and compliance.

Specifications

• Model Number: MIU5.12/18
• Manufacturer Part Number (MPN): MIU5.12/18
• Joist Size: 5 in. x 18 in.
• Gauge: 16
• Width: 5-1/8 in.
• Height: 17-5/16 in.
• Seat Depth: 2-1/2 in.
• Coating / Material: Zinc Galvanized, G90
• Hanger Type: Face-Mount
• Country of Origin: United States

Approved Applications

• Commercial framing requiring high-load I-joist connections
• Double I-joist assemblies in heavy structural applications
• Face-mount joist-to-header connections where positive-angle nailing is preferred
• Applications requiring optional enhanced uplift resistance via triangle joist nail holes
• Structural framing scenarios where web stiffener-free installation is desired in standard configurations

Installation Notes

• Use all specified fasteners as required by the load table. Verify that the header can accept all required fasteners specified in the installation table.
• Models include optional triangle joist nail holes for additional uplift capacity. Properly attached web stiffeners are required when utilizing this uplift configuration.
• For the MIU model: add four additional 10d x 1-1/2 in. joist nails for a total uplift load of 975 lbs.

Frequently Asked Questions

Do I need web stiffeners when using the MIU5.12/18?

No. The MIU5.12/18 is engineered specifically for commercial and high-load applications without requiring web stiffeners in standard configurations, reducing labor and simplifying installation.

Is this hanger compatible with double I-joist assemblies?

Yes. The MIU5.12/18 is specifically designed to accommodate double I-joist assemblies, making it well suited for heavy-load structural scenarios where added carrying capacity is needed.

What is positive-angle nailing (PAN) and why does it matter?

Positive-angle nailing (PAN) is a feature that allows nails to be driven at an angle that minimizes splitting of the I-joist flanges while enabling a more ergonomic nailing position, improving both installation speed and safety on the jobsite.

What type of corrosion protection does the MIU5.12/18 have?

The MIU5.12/18 features a G90 zinc galvanized coating, which provides corrosion resistance suited for protected interior framing environments.