The Simpson 4x6 Concealed Flange Joist Hanger Skewed Left ZMAX HSULC46Z is a heavy-duty structural connector engineered by Simpson to support 4x6 lumber members at a 45 deg. left-skew angle in wood-framed construction. Designed for installations where clean, professional framing lines matter, this hanger features concealed header flanges that hide the top flange connection within the header - making it a practical choice for exposed framing conditions where both structural integrity and finished appearance are priorities. Its ZMAX coating provides corrosion resistance suited for use with treated lumber, and its compatibility with a range of skew angles adds real-world installation flexibility.

Key Features

• 45 deg. Left-Skew Design - Purpose-built for left-skewed joist connections, ensuring precise alignment and load transfer at angled framing intersections without field modification.
• Concealed Header Flanges - The top flanges are hidden within the header upon installation, producing cleaner visible lines ideal for architecturally exposed or finish-quality framing applications.
• ZMAX Coating - Provides enhanced corrosion resistance, making this hanger compatible with treated lumber in applications where standard coatings may fall short.
• 40 deg. to 50 deg. Skew Accommodation Range - Accepts joists skewed between 40 deg. and 50 deg. left, giving installers a practical tolerance window around the primary 45 deg. angle without sacrificing structural performance.
• Square or Bevel Cut Joist End Compatibility - Works with both square-cut and bevel-cut joist ends, reducing the need for additional cutting steps on the job site.
• 14-Gauge Construction - Heavy-gauge steel provides the structural capacity needed for demanding load conditions in wood-framed assemblies.

Why This Product

• Aesthetics and Strength in One Connector - The concealed flange design addresses a common challenge in exposed framing: delivering the structural performance of a heavy-duty hanger while keeping the connection visually clean - no visible top flanges disrupting finished sightlines.
• Built for Treated Lumber Compatibility - The ZMAX coating makes this hanger a dependable choice for applications involving treated lumber, where corrosion resistance is a genuine long-term concern rather than an afterthought.
• Precision Fit for Angled Framing Layouts - Rather than forcing a standard hanger into an angled application, this connector is specifically engineered for 45 deg. left-skewed installations, supporting accurate, code-conscious connections at end-of-wall and angled joist conditions.
• Domestic Manufacturing - Produced in the United States, which can matter for projects with domestic content requirements or where supply chain consistency is a factor in product selection.

Specifications

• Model Number: HSULC46Z
• Skew Direction: Left (45 deg.)
• Gauge: 14
• Joist Size: 4 x 6
• Height: 4-3/4 in.
• Coating / Material: ZMAX
• Skew Accommodation Range: 40 deg. to 50 deg.
• Country of Origin: United States

Installation

Proper installation of the HSULC46Z requires the use of specified fasteners. Use #9 x 2-1/2" Strong-Drive SD Connector screws OR 0.162" x 3-1/2" nails. Fill all round and obround nail holes with the specified fasteners to achieve published table loads. Where noted, triangle holes in the joist flange may be filled for additional uplift capacity. The joist end may be square cut or bevel cut.

Approved Applications

• Supporting 4x lumber members in wood-framed construction at 45 deg. skewed angles
• End-of-wall joist connections requiring left-skewed hanger placement
• Exposed framing conditions where concealed flanges provide cleaner aesthetics
• Installations involving joists skewed between 40 deg. and 50 deg. to the left
• Applications using treated lumber where ZMAX corrosion resistance is required

Frequently Asked Questions

What size lumber is the HSULC46Z designed to support?

The HSULC46Z is engineered specifically to support 4x6 lumber members in wood construction framing applications.

Can this hanger accommodate joists that aren't cut at exactly 45 deg.?

Yes. While the hanger itself cannot be modified, it accommodates joists skewed between 40 deg. and 50 deg., providing a degree of installation flexibility around the primary 45 deg. left-skew angle.

Is this hanger suitable for exposed or finish-quality framing where appearance matters?

Yes. The concealed header flanges hide the top flange connection within the header, delivering cleaner visible lines in exposed framing conditions. This makes the HSULC46Z a strong choice for architectural and finish-quality framing applications where aesthetics are a priority.

Are web stiffeners required when installing the HSULC46Z?

No. Web stiffeners are not required in standard installations because the hanger's U-shaped design encapsulates the top flange of the joist, eliminating that need.