The Simpson HUC48 Concealed-Flange Heavy Face-Mount Joist Hanger is a heavy-duty structural connector from Simpson engineered for applications requiring additional strength and safety factors. Designed to support nominal 4x8 lumber, this face-mount hanger features concealed header flanges that keep visible lines clean and uncluttered when framing is left exposed - delivering both reliable structural performance and a more finished appearance in architectural and residential applications alike. Compatible with wood, masonry, and concrete headers, the HUC48 is a versatile solution for demanding framing conditions.

Key Features

• Concealed header flanges - keep exposed framing looking clean and finished without sacrificing structural integrity
• Extra optional triangle holes - allow additional fastening where higher load capacity is needed, giving installers flexibility for demanding applications
• Tested, load rated, and code compliant - provides confidence that the hanger meets recognized safety and performance standards for structural use
• Compatible with wood, masonry, and concrete headers - makes this hanger suitable across a wide range of construction assemblies and substrates
• 14-gauge steel construction - delivers the heavy-duty strength needed for applications where standard hangers fall short
• Zinc Galvanized G90 finish - provides corrosion resistance to stand up to demanding job site and environmental conditions
• Seat width of 3-9/16 in. for nominal 4x8 joists - ensures a precise, stable fit that properly supports the intended member size

Why This Product

• Heavy-duty performance where it matters most - the HUC48 is purpose-built for structures requiring additional strength and safety factors, making it a dependable choice when standard joist hangers are not enough
• A cleaner look in exposed framing - the concealed flange design hides the header connection from view, so structural connectors do not detract from the finished appearance of visible ceiling or beam assemblies
• Broad substrate compatibility - installs to wood, masonry, and concrete headers, reducing the need for different connectors across varying header materials on the same project
• Built-in load flexibility - optional triangle holes let contractors add fasteners for greater load transfer, providing a straightforward path to increased capacity without switching to a different connector

Specifications

• MPN: HUC48
• Member Size: 4x8
• Height: 6-1/8 in.
• Width: 3-9/16 in.
• Seat Depth: 2-1/2 in.
• Gauge: 14
• Finish: Zinc Galvanized, G90
• Coating: Zinc Galvanized, G90
• Install With: Install with 0.162 in. x 3-1/2 in. nails in the header and 0.148 in. x 3 in. nails in the joist (sold separately)
• Country of Origin: United States

Approved Applications

• Installing wood joists to wood headers
• Installing wood joists to masonry
• Installing wood joists to concrete
• 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 size lumber is the HUC48 designed for?

The HUC48 is designed for a nominal joist size of 4x8, with a seat width of 3-9/16 in. to properly support that member size.

What fasteners should be used to install the HUC48?

Install with 0.162 in. x 3-1/2 in. nails in the header and 0.148 in. x 3 in. nails in the joist for proper installation.

What makes the HUC48 suitable for exposed framing conditions?

The HUC48 features concealed header flanges, which provide cleaner visible lines when the framing is left exposed, combining structural performance with a more finished appearance.

Is the HUC48 corrosion resistant?

Yes. The HUC48 is coated with a Zinc Galvanized G90 finish, providing corrosion resistance suitable for demanding construction environments. It is manufactured from 14-gauge steel for heavy-duty strength.

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