The Simpson HUC48SS HUC Stainless-Steel Face-Mount Concealed-Flange Joist Hanger is a heavy-duty structural connector from Simpson built for framing applications that demand additional strength and safety factors. Designed to connect nominal 4x8 wood joists to wood, masonry, and concrete headers, this face-mount hanger features concealed header flanges that deliver cleaner visible lines wherever framing remains exposed. Fabricated from 14-gauge stainless steel, it provides exceptional corrosion resistance suited for exterior framing and pressure-treated lumber applications where standard hardware would fall short.

Key Features

• Concealed header flanges - keep metal hidden from view in exposed architectural conditions, producing a finished, professional appearance without sacrificing structural integrity
• 14-gauge stainless-steel construction - delivers the elevated corrosion resistance needed for exterior environments and treated-wood framing where standard galvanized hardware is not appropriate
• Extra optional triangle holes - allow additional fasteners to be added when higher load capacity is needed, giving installers flexibility to meet specific engineering requirements
• Tested, load rated, and code compliant - the HUC series meets recognized industry standards, supporting confidence during inspections and ensuring the connection performs as engineered
• Compatible with wood, masonry, and concrete headers - a single hanger model works across multiple substrate types, reducing the need to source different connectors for different framing conditions
• Seat width sized precisely for a 4x8 nominal joist - proper cradle fit minimizes movement during installation and ensures the joist bears evenly on the seat as designed

Why This Product

• Built for demanding structural conditions - the HUC series is specifically engineered for projects requiring additional strength and safety factors beyond what standard-duty hangers provide, making it a reliable choice for heavy framing assemblies
• Stainless steel where it matters most - the all-stainless construction paired with a requirement for stainless-steel fasteners eliminates galvanic corrosion risk, making this hanger a sound long-term choice for exterior decks, pergolas, and treated-lumber framing
• Cleaner results in exposed framing - the concealed-flange design addresses a common aesthetic challenge in open-beam and architectural framing, allowing the wood to remain the visual focus rather than the hardware
• Versatile substrate compatibility with optional load upgrades - the ability to install into wood, masonry, or concrete combined with extra triangle holes for additional fastening means one hanger can adapt to a wider range of job-site conditions and load demands

Specifications

• MPN: HUC48SS
• Material: Stainless Steel
• Finish: Stainless Steel
• Gauge: 14
• Member Size: 4x8
• Height: 6-1/8 in.
• Width: 3-9/16 in.
• Seat Depth: 2-1/2 in.
• Country of Origin: United States
• Install With: (10-14) 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 OR (20) #10 x 1-1/2 in. Strong-Drive SD Connector screws; stainless-steel fasteners required (sold separately)

Approved Applications

• Connecting wood joists to wood headers or beams
• Connecting wood joists to masonry and concrete structures
• Exterior construction environments requiring corrosion-resistant hardware
• Framing with pressure-treated lumber requiring stainless-steel compatible fasteners
• Exposed architectural conditions where concealed flanges provide a cleaner finished appearance

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What size joist is the HUC48SS designed to support?

The HUC48SS is designed for a nominal joist size of 4x8, with a seat width of 3-9/16 in. to properly cradle the joist member.

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

Because the HUC48SS is manufactured from stainless steel for enhanced corrosion resistance, stainless-steel fasteners are required to maintain compatibility and prevent galvanic corrosion, especially in exterior and treated-wood applications.

What fasteners are approved for installing the HUC48SS?

Approved fasteners include (10-14) 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, or alternatively (20) #10 x 1-1/2 in. Strong-Drive SD Connector screws. Stainless-steel fasteners are required.

Can the HUC48SS be used with masonry or concrete headers?

Yes. The HUC48SS is designed to install wood joists to wood, masonry, and concrete, making it versatile for a range of structural framing applications.

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