The Simpson 2-1/2 x 9-1/4 to 9-1/2 Concealed-Flange Heavy Face-Mount Hanger HUC310 is an engineered structural connector from Simpson designed for demanding framing applications where both strength and appearance matter. Built as a heavy face-mount hanger with a concealed-flange design, it delivers reliable joist-to-header connections for projects that call for elevated load capacity and clean, unobtrusive visible lines - making it a practical choice for exposed framing conditions where the finish quality of structural connections is just as important as performance.

Key Features

• Heavy face-mount hanger configuration - attaches directly to the face of the header for straightforward installation without the need for specialized framing sequences, saving time on the job site.
• Concealed-flange design - header flanges stay hidden once installed, producing clean visible lines that are especially valuable in exposed framing and timber applications where aesthetics are a priority.
• Engineered for structures requiring additional strength and elevated safety factors - provides the structural integrity needed for demanding residential and commercial framing applications where standard hangers are insufficient.
• Accommodates 2-1/2 in. wide joists at depths from 9-1/4 in. to 9-1/2 in. - fits common nominal lumber sizes within that range, reducing the need for custom or special-profile connectors on qualifying framing members.
• Galvanized finish - provides corrosion resistance suited to a broad range of interior and exterior framing environments, helping the hanger hold up over the life of the structure.
• 14 ga. (68 mil) steel construction - heavy-gauge material directly supports the hanger's elevated load ratings, giving builders confidence that the connection will perform under demanding structural conditions.

Why This Product

• Strength where standard hangers fall short - the HUC310 is specifically engineered for applications requiring additional load capacity and higher safety factors, making it the appropriate choice when a standard joist hanger is not rated for the task at hand.
• A cleaner finish in exposed framing - the concealed-flange design sets this hanger apart for visible or semi-exposed framing conditions, allowing the structural connection to blend with the finished look rather than interrupt it.
• Built to last in varied environments - the combination of 14 ga. (68 mil) steel and a galvanized finish means the HUC310 is constructed for durability and corrosion resistance across a wide range of jobsite and in-service conditions.
• Domestic engineering and manufacturing - the HUC310 is a United States-origin product from Simpson, a brand recognized throughout the construction industry for consistent connector quality and engineering standards.

Specifications

• Model Number: HUC310
• Description: 2-1/2x9-1/4 TO 9-1/2 HUC Heavy Concealed-Flange Face-Mount Joist Hanger
• Material: 14 ga. (68 mil) steel
• Finish: Galvanized
• Joist Width: 2-1/2 in.
• Joist Depth Range: 9-1/4 in. to 9-1/2 in.
• Hanger Type: Heavy Face-Mount
• Flange Style: Concealed
• Height: 8-7/8 in.
• Width: 2-9/16 in.
• Seat Depth: 2-1/2 in.
• Country of Origin: United States

Options

Contact us for Configurable Options and Special orders

Frequently Asked Questions

What does "concealed-flange" mean on the HUC310?

The concealed-flange design means the header flanges are hidden from view once installed, resulting in cleaner visible lines. This makes the HUC310 particularly well suited for exposed framing applications where the appearance of the connection is important.

What joist dimensions is the HUC310 designed to support?

The HUC310 is designed for joists that are 2-1/2 inches wide and between 9-1/4 and 9-1/2 inches in depth, accommodating common nominal lumber sizes within that range.

What gauge steel is used in the HUC310, and why does it matter?

The HUC310 is fabricated from 14-gauge (68 mil) steel. This heavy-gauge construction is specifically chosen to deliver the additional strength and safety factors required by demanding structural applications.

Is the HUC310 protected against corrosion?

Yes. The HUC310 features a galvanized finish, which provides a layer of corrosion resistance suitable for a range of framing and construction environments.

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