The Simpson MIU5.12/20 Face-Mount I-Joist Hanger is engineered for demanding commercial, high-load, and double I-joist applications, delivering exceptional structural performance without requiring web stiffeners in standard configurations. Designed for a 5-inch x 20-inch joist, this heavy-duty 16-gauge hanger combines reliable load transfer with installation-friendly features that help crews work faster and more accurately on the job site. Manufactured in the United States with a Zinc Galvanized G90 coating for corrosion resistance, the MIU5.12/20 is a trusted solution wherever high-capacity face-mount connections are required.

Key Features

• High-Load Performance: Designed specifically for commercial, high-load, and double I-joist applications, delivering superior strength where standard hangers fall short.
• No Web Stiffeners Required (Standard Use): Simplifies installation by eliminating the need for web stiffeners in typical applications.
• Positive-Angle Nailing (PAN): Minimizes splitting of the flanges while permitting time-saving nailing from a better, more ergonomic angle.
• Speed Prongs: Temporarily position and secure the connector during installation, enabling easier and faster placement without extra hands.
• Optional Triangle Joist Nail Holes: Provides additional uplift capacity when needed, with models supporting a total uplift load of 975 lbs. when four additional 10d x 11/2-inch joist nails are added.
• G90 Zinc Galvanized Coating: Offers reliable protection against corrosion in a wide range of construction environments.
• 16-Gauge Steel Construction: Delivers the structural integrity required for high-load commercial framing applications.

Specifications

• Model Number: MIU5.12/20
• Manufacturer Part Number (MPN): MIU5.12/20
• Joist Size: 5 in. x 20 in.
• Gauge: 16
• Width: 5-1/8 in.
• Height: 19-5/16 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 joist connections
• Double I-joist assemblies demanding face-mount support
• High-load residential and light commercial structural framing
• Applications where positive-angle nailing is preferred to reduce flange splitting risk
• Installations requiring optional enhanced uplift resistance via triangle joist nail holes

Installation Notes

• Use all specified fasteners. Verify that the header can take the required fasteners specified in the load table.
• Models have optional triangle joist nail holes for additional uplift. Properly attached web stiffeners are required when this option is used.
• For MIU models: add four additional 10d x 11/2-inch joist nails for a total uplift load of 975 lbs.

Frequently Asked Questions

What joist size is the MIU5.12/20 designed to fit?

The MIU5.12/20 is designed specifically for a 5-inch x 20-inch I-joist, making it suited to heavy-duty framing applications that require a large-format face-mount hanger.

Do I need web stiffeners when installing the MIU5.12/20?

In standard configurations, web stiffeners are not required, which simplifies the installation process and helps crews work more efficiently on the job site.

Can the MIU5.12/20 provide additional uplift capacity if needed?

Yes. The hanger includes optional triangle joist nail holes that, when four additional 10d x 11/2-inch joist nails are added, support a total uplift load of 975 lbs., giving you added capacity for applications with higher uplift demands.

What features does the MIU5.12/20 include to speed up installation?

The MIU5.12/20 features Speed Prongs, which temporarily position and secure the hanger during installation without requiring extra hands, and Positive-Angle Nailing (PAN), which allows nailing from a more ergonomic angle while minimizing flange splitting.