The Simpson MIT49.5 Top-Flange Joist Hanger for 3-1/2 in. x 9-1/2 in. Engineered Wood from Simpson is a structural connector engineered to support standard 90 deg. connections of I-joists to headers in engineered wood framing. Designed for installation before the joist is placed, this top-flange hanger delivers maximum down loads with a minimum number of fasteners. Its Funnel Flange design simplifies member placement, and the 16-gauge galvanized steel construction ensures lasting performance in demanding framing applications.

Key Features

• Positive-angle nailing (PAN) - minimizes splitting of I-joist flanges while allowing nailing from a more accessible angle, reducing installation time on the job site
• Nail hole material is not removed during PAN - preserves structural integrity at the nail point, maintaining the strength of the connection
• Optional triangle nail holes for increased uplift capacity - gives installers flexibility to handle higher-load conditions when properly-secured web stiffeners are added
• Funnel Flange design - guides members into position more easily before the joist is set, speeding up the framing process
• Cost-effective alternative to welded hangers - delivers reliable 90 deg. connections for engineered wood at a lower overall cost
• Optional fastening with PAT for steel header applications - broadens compatibility beyond wood headers for greater versatility on mixed-material projects
• 16-gauge steel construction - provides the structural strength needed to handle maximum down loads with fewer fasteners required
• G90 zinc galvanized finish - adds a layer of corrosion resistance that helps extend the service life of the connector in exposed or moisture-prone framing environments

Why This Product

• Engineered specifically for I-joist framing - the positive-angle nailing feature is purpose-built for I-joists, reducing the risk of flange splitting that can compromise structural connections when using standard hangers
• Fewer fasteners, faster installs - the top-flange design is optimized to achieve maximum down load capacity with a minimum number of nails, cutting labor time without sacrificing connection strength
• Built-in flexibility for demanding load conditions - the optional triangle nail holes allow for increased uplift capacity when project requirements call for it, making this a single connector that can adapt to varying structural demands
• Made in the United States to Simpson quality standards - domestic production under the Simpson brand means consistent dimensional accuracy and material quality that contractors can rely on across engineered wood applications

Specifications

• MPN: MIT49.5
• Member Size: 3-1/2 in. x 9-1/2 in.
• Gauge: 16
• Coating/Finish: Zinc Galvanized, G90
• Width: 3-1/2 in.
• Height: 9-1/2 in.
• Seat Depth: 2-1/2 in.
• Top Flange: 2-5/16 in.
• Install With: Install with 0.162 in. x 3-1/2 in. nails in the header and 0.148 in. x 1-1/2 in. nails in the joist (sold separately)
• Country of Origin: United States

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What type of connection does the Simpson MIT49.5 support?

The Simpson MIT49.5 is designed to support standard 90 deg. connections of I-joists to headers, making it well suited for engineered wood framing applications.

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

Positive-angle nailing (PAN) is a feature specifically created for I-joists that minimizes splitting of the flanges while allowing nailing from a better angle to save installation time. Importantly, the nail hole material is not removed during this process.

What fasteners are required to install the MIT49.5?

Installation requires 0.162 in. x 3-1/2 in. nails in the header and 0.148 in. x 1-1/2 in. nails in the joist.

Can the MIT49.5 be used for increased uplift capacity?

Yes. The optional triangle nail holes may be used for increased uplift capacity; however, optional uplift nailing requires the addition of properly-secured web stiffeners.

Note: Product dimensions may differ from picture.