The Simpson ITS3.56/11.88 ITS Galvanized Top-Flange Joist Hanger is an innovative engineered wood connector from Simpson designed to deliver fast, reliable 90-degree support connections for I-joists sized 3-1/2 in. x 11-7/8 in. The Strong-Grip seat and Funnel Flange design work together to hold the I-joist securely in place without requiring joist nails during standard installation, setting a new standard for top-flange hangers used with engineered wood products. Built from 18-gauge steel with a Zinc Galvanized, G90 coating, this hanger is engineered to perform in demanding framing applications where speed, strength, and durability all matter.

Key Features

• Strong-Grip seat accommodates I-joist flange thickness from 1-1/8 in. to 1-1/2 in. - securely grips a wide range of engineered I-joist flanges without additional hardware, reducing the chance of fit issues in the field
• No joist nailing required for standard I-joist installation without web stiffeners - cuts installation steps and fastener count, saving time and labor on every connection
• Funnel Flange design guides the joist into position - speeds up placement during framing so crews can move faster without sacrificing alignment accuracy
• Made from 18-gauge steel - provides a rigid, load-bearing connection capable of handling the structural demands of engineered wood floor and roof framing systems
• Zinc Galvanized, G90 coating - adds extra corrosion resistance to extend service life in applications where moisture exposure is a concern

Why This Product

• Faster installation than conventional EWP top-flange hangers - the combination of the Strong-Grip seat and Funnel Flange eliminates joist nailing for standard installations, directly reducing the time crews spend on each connection
• Lower installed cost through fewer required fasteners - because no joist nails are needed for standard I-joist installation without web stiffeners, hardware costs and nail-driving time are both reduced on every hanger installed
• Engineered specifically for I-joists - the 3-1/2 in. x 11-7/8 in. member sizing and flange-thickness range of 1-1/8 in. to 1-1/2 in. make this hanger a precise fit for common engineered wood I-joist dimensions used in residential and light commercial framing
• Built for durability with G90 galvanized steel - the 18-gauge construction paired with Zinc Galvanized, G90 finish means the hanger resists corrosion and maintains structural integrity in real-world framing environments

Specifications

• MPN: ITS3.56/11.88
• Member Size: 3-1/2 in. x 11-7/8 in.
• Seat Width: 3-5/8 in.
• Height: 11-3/16 in.
• Gauge: 18
• Coating/Finish: Zinc Galvanized, G90
• Install With: 0.148 in. x 3 in. nails (sold separately)
• Width: 3-5/8 in.
• Top Flange: 1-7/16 in.
• Country of Origin: United States

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What type of lumber or engineered wood is this hanger designed to support?

This hanger is designed for use with engineered wood I-joists with an actual member size of 3-1/2 in. x 11-7/8 in. The Strong-Grip seat accommodates I-joists with flange thickness from 1-1/8 in. to 1-1/2 in.

Are joist nails required during installation?

No. No joist nailing is required for standard I-joist installation without web stiffeners. The Strong-Grip seat and Funnel Flange design securely hold the I-joist in place, which helps reduce installation time and hardware costs.

What fasteners should be used to install this joist hanger?

This hanger should be installed with 0.148 in. x 3 in. nails as specified by Simpson Strong-Tie.

What corrosion protection does this hanger have?

This hanger features a Zinc Galvanized, G90 coating, which provides extra corrosion resistance, making it suitable for applications where additional durability is needed.

Note: Product dimensions and/or fastener holes may differ from picture. Please see item description for specifications.