The Simpson MIT4.75/16 Top-Flange Joist Hanger for 4-5/8 in. x 16 in. Engineered Wood is a 16-gauge galvanized metal connector from Simpson engineered to support 90 deg. connections of I-joists to headers. Designed to be installed before the joist is set in place, this top-flange hanger delivers maximum down loads while requiring a minimum number of fasteners - making it a practical and cost-effective choice for structural framing with engineered lumber. Its Funnel Flange design allows for easier placement of members, and its positive-angle nailing feature is specifically built to protect I-joist flanges during installation.

Key Features

• Positive-angle nailing (PAN) designed for I-joists - minimizes splitting of the flanges while permitting time-saving nailing from a better angle, helping installers work faster without compromising structural integrity
• Nail hole material is not removed with PAN - preserves the full strength of the connection at each fastener point, maintaining load-carrying performance
• Optional triangle nail holes for increased uplift capacity - gives installers flexibility to meet higher uplift requirements where needed, though properly-secured web stiffeners must be added when using this option
• Optional fastening with PAT for steel header applications - expands compatibility beyond wood headers to steel framing configurations, adding versatility for mixed-material builds
• Funnel Flange design - allows for easier placement of joist members during installation, reducing the time and effort required to position components accurately
• Cost-effective alternative to welded hangers - delivers reliable performance for standard 90 deg. I-joist-to-header connections without the cost premium of welded connectors
• Made from 16-gauge steel with G90 zinc galvanized coating - provides extra corrosion resistance, making this hanger suitable for applications where moisture exposure is a concern

Why This Product

• Built specifically for engineered wood I-joists - unlike general-purpose joist hangers, the MIT4.75/16 is purpose-engineered for I-joist connections, with PAN holes and a Funnel Flange that address the specific handling and splitting risks unique to engineered lumber framing.
• Fewer fasteners, maximum load performance - the top-flange hanger design is engineered to achieve maximum down loads with a minimum number of fasteners, reducing installation time and hardware costs on the job site.
• Versatile across steel and wood header applications - with optional PAT fastening for steel headers and compatibility with standard wood framing, this hanger adapts to a wider range of structural configurations than a single-application connector would allow.
• G90 galvanized finish for lasting durability - the zinc galvanized G90 coating offers extra corrosion resistance, helping the connector maintain its structural integrity over time in demanding framing environments.

Specifications

• Model Number: MIT4.75/16
• Member Size: 4-5/8 x 16
• Width: 4-3/4 in.
• Height: 16 in.
• Seat Depth: 2-1/2 in.
• Top Flange: 2-5/16 in.
• Gauge: 16
• Coating/Finish: Zinc Galvanized, G90
• Country of Origin: United States
• Installation Fasteners: 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)

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

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

Positive-angle nailing (PAN) is a design feature specifically created for I-joists that minimizes splitting of the flanges. It also permits time-saving nailing from a better angle, and importantly, the nail hole material is not removed, which preserves the structural integrity of the connection.

What size nails are required to install the MIT4.75/16?

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.

Can the MIT4.75/16 be used with steel headers?

Yes. The MIT4.75/16 features optional fastening with PAT for steel applications/header, providing added versatility for different structural configurations.

How does the optional triangle nail hole feature work?

The optional triangle nail holes may be used for increased uplift capacity. However, optional uplift nailing requires the addition of properly-secured web stiffeners to ensure a safe and code-compliant installation.

Note: Product dimensions may differ from picture. Please see the item description above for specifications.