The Simpson HUC410 Galvanized Face-Mount Concealed-Flange Joist Hanger is a heavy-duty structural connector engineered by Simpson for framing applications that demand additional strength and safety factors. Designed to connect wood joists to wood, masonry, and concrete headers, this face-mount hanger features concealed header flanges that produce cleaner visible lines wherever framing is left exposed. Built from 14-gauge steel with a G90 zinc galvanized finish, it delivers the structural reliability and corrosion resistance required in demanding construction environments.

Key Features

• Concealed header flanges - keep the connection hardware hidden from view, producing clean, professional lines in exposed framing conditions without sacrificing structural performance
• Extra optional triangle holes - allow additional fasteners to be added where higher loads demand it, giving installers flexibility to meet specific engineering requirements
• HUC-series hangers are tested, load rated and code compliant - provides confidence that the connector meets recognized structural standards and can be specified without guesswork
• Compatible with wood, masonry, and concrete headers - makes this a versatile solution across a wide range of residential and commercial framing situations
• 14-gauge steel construction - delivers the added rigidity and load capacity expected in heavy-duty joist hanger applications
• G90 zinc galvanized coating - provides extra corrosion resistance, extending the service life of the connection in moisture-prone or outdoor-adjacent environments
• Skewable seat and sloping seat options available on select models (up to 45 deg.) - accommodates angled framing conditions that standard hangers cannot address

Why This Product

• Built for high-demand structural connections - the HUC410 is specifically designed for structures requiring additional strength and safety factors, making it the right choice when standard-duty hangers are not sufficient for the load or application
• Aesthetically clean without sacrificing strength - the concealed-flange design is a practical advantage in any project where beams or joists are visible, eliminating the need to hide or cover exposed hardware after installation
• Tested, rated, and code compliant - because the HUC-series is load rated and code compliant, contractors and engineers can use it on permitted projects with confidence and without additional field verification of structural adequacy
• Adaptable fastening options - compatibility with both nails and Strong-Drive SD Connector screws means installers can use the fastener type that best fits their workflow and jobsite conditions

Specifications

• MPN: HUC410
• Member Size: 4x10
• Height: 8-3/8 in.
• Width: 3-9/16 in.
• Seat Depth: 2-1/2 in.
• Gauge: 14
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Install With: (14-18) 0.162 in. x 3-1/2 in. nails in the header and (6-10) 0.148 in. x 3 in. nails in the joist OR (28) #10 x 1-1/2 in. Strong-Drive SD Connector screws (sold separately)
• Country of Origin: United States

Approved Applications

• Wood joist to wood header connections
• Wood joist to masonry connections
• Wood joist to concrete connections
• Exposed framing conditions requiring concealed header flanges for cleaner visible lines
• Structures requiring additional strength and safety factors

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What size joist is the HUC410 designed to support?

The HUC410 is designed for a nominal joist size of 4x10, with a seat width of 3-9/16 in. to properly cradle and support the joist member.

What type of fasteners are required to install the HUC410?

Installation requires either (14-18) 0.162 in. x 3-1/2 in. nails in the header and (6-10) 0.148 in. x 3 in. nails in the joist, or (28) #10 x 1-1/2 in. Strong-Drive SD Connector screws.

What does the G90 galvanized coating mean for this hanger?

The G90 designation refers to a zinc galvanized coating that provides extra corrosion resistance, making the HUC410 suitable for use in environments where moisture exposure is a concern.

Why are the header flanges concealed on the HUC410?

The concealed header flanges are specifically designed to provide cleaner visible lines in exposed framing conditions, making the HUC410 an ideal choice where aesthetics of the structural connection are important alongside performance.

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