The Simpson 3-1/2 x 18 Heavy I-Joist Top-Flange Hanger HIT418 is a heavy-duty structural connector engineered by Simpson for standard 90 deg. connections of I-joists to headers. Built from 16-gauge steel with a Zinc Galvanized, G90 finish, this top-flange hanger is purpose-built for demanding load applications where both structural integrity and I-joist protection are critical priorities.

Key Features

• Standard 90 deg. connection design - optimized specifically for I-joist-to-header framing, ensuring a reliable and consistent fit in typical structural applications.
• Heavy top-flange hanger construction - provides the load capacity needed for demanding structural environments, making it a dependable choice for heavy framing work.
• Positive-angle nailing (PAN) design - directs fasteners at an angle engineered for I-joists, reducing the risk of splitting and helping preserve the structural integrity of the joist throughout installation and service life.
• Extra triangle holes - allow for higher uplift loads, giving builders added capacity to resist upward forces in applications where elevated uplift performance is required.
• 16-gauge steel construction - delivers robust, heavy-duty strength suited for structural framing connections that must perform reliably over time.
• Zinc Galvanized, G90 finish - provides corrosion resistance to help the hanger hold up in conditions where moisture exposure is a concern.

Why This Product

• Built specifically for I-joist framing - the positive-angle nailing (PAN) feature is engineered around the unique characteristics of I-joists, actively protecting the joist material during fastening rather than relying on a generic nailing pattern.
• Handles demanding load requirements - the heavy top-flange design and extra triangle holes for higher uplift loads make this hanger a practical fit for structural applications where standard hangers may fall short.
• Corrosion-resistant finish for long-term reliability - the Zinc Galvanized, G90 finish helps protect the hanger against corrosion, supporting a longer service life in real-world framing conditions.
• Engineered and made by Simpson - a structural connector from a brand widely recognized among framing professionals, giving contractors and builders confidence in the product's design and manufacturing standards.

Specifications

• Model No.: HIT418
• Joist Size (in.): 3-1/2 x 18
• Gauge: 16
• W (in.): 3-9/16
• H (in.): 18
• B (in.): 3
• Finish: Zinc Galvanized, G90
• Country of Origin: United States

Frequently Asked Questions

What type of connection is the HIT418 designed for?

The HIT418 is designed for standard 90-degree connections of I-joists to headers, making it a reliable choice for typical framing applications where I-joists meet a header at a right angle.

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

Positive-angle nailing (PAN) is a nailing configuration specifically engineered for I-joists. It directs fasteners at an angle that minimizes the risk of splitting the I-joist material, helping maintain the structural integrity of the joist during and after installation.

What is the purpose of the extra triangle holes on the HIT418?

The extra triangle holes are designed to allow for higher uplift loads. This feature gives the hanger greater capacity to resist upward forces, making it suitable for applications where elevated uplift performance is required.

What gauge steel and finish does the HIT418 use?

The HIT418 is manufactured from 16-gauge steel with a Zinc Galvanized, G90 finish, providing a sturdy and corrosion-resistant hanger suited for structural applications.

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