The Simpson MIU3.56/7 Galvanized Face-Mount I-Joist Hanger is built for commercial and high-load engineered wood applications where a reliable, no-compromise joist connection is essential. Designed by Simpson to support 3-1/2 in. x 7 in. I-joist members, this face-mount hanger eliminates the need for web stiffeners, streamlining installation without sacrificing structural performance. Formed from 16-gauge steel with a G90 zinc galvanized finish, it delivers durable corrosion resistance suited to demanding job site conditions.

Key Features

• Positive-angle nailing design - minimizes splitting of the I-joist flanges while allowing fasteners to be driven from a more accessible angle, saving time on the job without compromising connection integrity
• No web stiffeners required - engineered specifically for high-load I-joist applications without the need for web stiffeners, reducing material costs and simplifying the installation process
• 16-gauge steel construction - heavy-gauge steel provides the structural rigidity needed for commercial and high-load joist connections
• G90 zinc galvanized coating - offers enhanced corrosion resistance, making this hanger well-suited for environments where moisture exposure is a concern
• Cannot be modified - fixed configuration ensures the hanger performs exactly as engineered and tested, maintaining connection reliability in critical structural applications

Why This Product

• Purpose-built for high-load I-joist framing - the MIU series is specifically designed for commercial and high-load I-joist applications, making this hanger a dependable choice when standard hangers fall short of project requirements
• Faster, safer nailing geometry - the positive-angle nailing feature lets installers drive fasteners from a better position, protecting the engineered wood flanges and reducing the risk of splitting during installation
• Corrosion-resistant for long-term performance - the G90 galvanized finish adds a layer of protection that supports the longevity of the connection in moisture-prone or exterior-adjacent structural applications
• Precise fit for engineered wood members - sized exactly for 3-1/2 in. x 7 in. I-joists, this hanger eliminates guesswork and helps ensure proper load transfer from day one

Specifications

• Model Number: MIU3.56/7
• Member Size: 3-1/2 in. x 7 in.
• Width: 3-9/16 in.
• Height: 7 in.
• Seat Depth: 2-1/2 in.
• Gauge: 16
• Coating / Finish: Zinc Galvanized, G90
• Installation Fasteners: 0.162 in. x 3-1/2 in. nails in the face; 0.148 in. x 1-1/2 in. nails in the header (sold separately)
• Country of Origin: United States

Approved Applications

• Commercial construction requiring high-load joist connections
• Engineered wood I-joist installations with 3-1/2 in. x 7 in. member dimensions
• High-load face-mount hanger applications where web stiffeners are not desired or practical
• Applications requiring enhanced corrosion resistance due to G90 galvanized coating

Installation

Install with 0.162 in. x 3-1/2 in. nails in the face and 0.148 in. x 1-1/2 in. nails in the header. Use all specified fasteners. Verify that the header can accommodate the required fasteners prior to installation. These hangers cannot be modified.

Frequently Asked Questions

What size I-joist is the MIU3.56/7 designed to fit?

The MIU3.56/7 is sized for 3-1/2 in. x 7 in. engineered wood I-joist members. This is the actual joist size the hanger accommodates, so it is important to confirm your I-joist dimensions match before purchasing.

Does this hanger require web stiffeners during installation?

No. The MIU3.56/7 is specifically engineered for commercial and high-load I-joist applications without requiring web stiffeners, simplifying the installation process in demanding structural applications.

What nails should be used to install the MIU3.56/7?

Install this hanger using 0.162 in. x 3-1/2 in. nails in the face and 0.148 in. x 1-1/2 in. nails in the header. Using the correct nail specifications is essential for achieving the hanger's rated load performance.

Can the MIU3.56/7 be field-modified to fit a different joist size or configuration?

No. These hangers cannot be modified. The MIU3.56/7 is factory-configured to its specific dimensions, which ensures consistent, code-compliant performance. If you need a different size or configuration, a different hanger model should be selected.