The Simpson 2-5/16 x 9-1/2 Concealed-Flange Heavy Face-Mount Hanger HUC359 is a heavy-duty joist hanger from Simpson engineered for structural connections that demand strength beyond what standard-duty hardware provides. Its concealed header flanges keep the installed connection looking clean and finished, making it a practical choice for exposed framing applications where structural elements remain visible after construction is complete. Face-mount installation keeps the process straightforward in the field, whether the application calls for a conventional square seat or one of the angled configurations available on select models.

Key Features

• Concealed header flanges - hide the hanger's mounting flanges once installed, producing cleaner visible lines in architectural or exposed-ceiling framing conditions where appearance matters alongside performance.
• Heavy-duty construction - built for structures requiring additional strength and elevated safety factors, giving builders confidence in demanding load situations that exceed the range of standard joist hangers.
• Face-mount installation design - attaches directly to the face of the header, simplifying field installation and reducing the complexity of the connection for framers working in tight or awkward conditions.
• Galvanized finish - provides a layer of corrosion resistance that helps extend the service life of the connection in environments where moisture exposure is a concern.
• Configurable seat options on select models - a skewable seat and a seat that slopes up to 45 deg. are available, allowing the hanger to accommodate angled or non-square framing conditions without requiring a completely different product.
• American-made product - produced domestically under Simpson quality standards, offering buyers assurance of consistent manufacturing oversight.

Why This Product

• Strength where standard hangers fall short - the HUC359 is specifically engineered for structures requiring additional strength and safety factors, making it the appropriate choice when load demands or code requirements push beyond what a light- or standard-duty hanger can reliably handle.
• A cleaner finish in visible framing - the concealed-flange design addresses a real-world challenge in exposed-ceiling and architectural applications, delivering structural performance without the cluttered look of visible header flanges once the installation is complete.
• Flexibility for non-standard framing layouts - with configurable seat options including skew and slope adjustments up to 45 deg. available on select models, this hanger can adapt to framing conditions that would otherwise require custom or specialty hardware.
• Trusted Simpson engineering - backed by Simpson's established reputation in structural connectors, the HUC359 carries the design rigor and quality standards that contractors and engineers rely on for critical framing connections.

Specifications

• Model Number: HUC359
• Description: 2-5/16x9-1/2 HUC Heavy Concealed-Flange Face-Mount Joist Hanger
• Material: 14 ga. (68 mil) steel
• Finish: Galvanized
• Height: 9 in.
• Width: 2-3/8 in.
• Seat Depth: 2-1/2 in.
• Country of Origin: United States

Options

Configurable options are available, including a skewable seat and a seat that slopes up to 45 degrees on select models. Contact us for Configurable Options and Special orders.

Frequently Asked Questions

What makes the HUC359 different from a standard joist hanger?

The HUC359 is part of Simpson Strong-Tie's heavy-duty HUC series, built from 14 ga. (68 mil) steel and designed for structures requiring additional strength and safety factors beyond what a standard-duty hanger provides. Its concealed header flanges also set it apart by offering cleaner visible lines in exposed framing situations.

What does "concealed-flange" mean and why does it matter?

A concealed-flange design means the header flanges are hidden once the hanger is installed, resulting in a neater, more finished appearance. This is particularly beneficial in exposed ceiling or architectural framing conditions where the structural connections remain visible after construction is complete.

Can the HUC359 accommodate angled or skewed installations?

Some models in the HUC series can be configured with a skewable seat and a seat that slopes as far as up to 45 degrees..

What finish does the HUC359 have, and is it suitable for treated lumber?

The HUC359 features a galvanized finish, which provides a layer of corrosion resistance. For compatibility with specific treated lumber types or chemical exposures, consult the Simpson Strong-Tie specification sheet for the HUC359 to confirm the appropriate finish for your project requirements.

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