The Simpson HUC46SS Stainless Concealed-Flange Heavy Face-Mount Joist Hanger is a heavy-duty, 14-gauge stainless-steel face-mount hanger engineered by Simpson for structures requiring additional strength and safety factors. The concealed header flanges deliver cleaner, more refined visible lines in exposed framing conditions, making this hanger equally suited for demanding structural work and finish-sensitive applications. Stainless-steel construction provides superior corrosion resistance for exterior environments and treated-wood applications, while broad substrate compatibility allows wood joists to be connected to wood, masonry, and concrete headers.

Key Features

• Concealed header flanges - keep hardware out of sight in exposed framing conditions, producing cleaner visible lines without sacrificing structural integrity
• 14-gauge stainless-steel construction - delivers heavy-duty load capacity with superior corrosion resistance for exterior and treated-wood applications
• Extra optional triangle holes - allow additional fasteners to be added when higher load capacity is needed, giving installers flexibility for more demanding structural requirements
• Tested, load rated, and code compliant - HUC-series hangers meet established performance standards, supporting straightforward approval on permitted projects
• Installs wood joists to wood, masonry, and concrete - broad substrate compatibility means one hanger model works across the most common header materials on a job site
• 3-9/16 in. seat width for nominal 4x6 lumber - precisely sized to cradle the joist member securely, ensuring consistent bearing and alignment during installation

Why This Product

• Built for corrosion-prone environments - stainless-steel material and required stainless-steel fasteners work together to maintain corrosion-resistance integrity in exterior, coastal, or pressure-treated-lumber applications where standard galvanized hardware falls short
• Structural confidence backed by third-party testing - HUC-series hangers are tested and load rated, so engineers, inspectors, and contractors can rely on published values rather than estimating capacity
• Concealed flanges serve double duty - the face-mount design with hidden header flanges satisfies both the structural demands of heavy framing connections and the aesthetic requirements of exposed architectural conditions, eliminating the need for a separate finish solution
• Adaptable load capacity through optional triangle holes - when project loads increase, the extra triangle nail holes provide a built-in upgrade path without switching to a different hanger model

Specifications

• MPN: HUC46SS
• Member Size: 4x6
• Height: 4-3/4 in.
• Width: 3-9/16 in.
• Seat Depth: 2-1/2 in.
• Gauge: 14
• Material: Stainless Steel
• Finish: Stainless Steel
• Country of Origin: United States
• Install With: (8-12) 0.162 in. x 3-1/2 in. ring-shank nails in the header and (4-6) 0.148 in. x 3 in. ring-shank nails in the joist; stainless-steel fasteners required (sold separately)

Approved Applications

• Installing wood joists to wood headers
• Installing wood joists to masonry
• Installing wood joists to concrete
• Exterior and exposed structural applications requiring corrosion-resistant hardware
• Structures requiring additional strength and safety factors
• Exposed framing conditions where concealed flanges provide cleaner visible lines

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What joist size is the HUC46SS designed to support?

The HUC46SS is designed for a nominal joist size of 4x6, with a seat width of 3-9/16 in. to securely cradle the joist member.

Why should stainless-steel fasteners be used with this hanger?

Because the HUC46SS is made from stainless steel, stainless-steel fasteners are required to maintain corrosion resistance integrity. Mixing metals can accelerate corrosion, particularly in exterior or treated-wood applications.

What types of surfaces can this hanger connect wood joists to?

The HUC46SS is designed to install wood joists to wood, masonry, and concrete, offering broad compatibility across common construction substrates.

What is the purpose of the optional triangle holes on the HUC46SS?

The extra optional triangle holes allow for additional nailing to increase the load capacity of the connection when greater load transfer is required by the application or design.

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