The Simpson Ornamental Joist Hanger for 4x12 Lumber, Black Powder Coated is a 7-gauge, face-mount connector engineered for exposed timber framing applications where structural performance and visual presentation must work together. Its black powder-coat finish gives it a clean, intentional look suited to residential and commercial settings where the hardware remains visible - making it a natural fit for decorative beam assemblies, open-ceiling construction, and ornamental timber connections that demand both reliability and refined appearance.

Key Features

• 7-Gauge Steel Construction - Heavy-gauge steel provides substantial load-bearing capacity in a face-mount configuration, giving builders confidence in both strength and durability for demanding joist-to-header connections.
• Black Powder-Coat Finish - A uniform, durable coating delivers a decorative appearance purpose-built for visible hardware, so exposed connections look as intentional as the surrounding timber framing.
• Face-Mount Design - Attaches directly to the face of a header for a straightforward, secure installation that keeps the connection tight and properly aligned with 4x12 lumber.
• Precision-Fit for 4x12 Lumber - Dimensioned specifically for standard 4x12 joists, eliminating guesswork and ensuring an accurate, code-consistent fit every time.
• Simpson Engineering and Domestic Production - Designed and produced in the United States under the quality standards that Simpson connectors are known for, supporting consistent performance across residential and commercial structural applications.

Why This Product

• Built for Where Looks and Load Both Matter - Unlike utility-grade hangers hidden behind drywall, this connector is engineered specifically for ornamental and exposed timber framing, so you get a structural connection that also contributes to the finished aesthetic of the space.
• One Hanger, One Joist Size - No Guessing - The OU412 is precision-dimensioned for 4x12 lumber, which means installers get a secure, accurate fit without shimming, improvising, or compromising structural alignment.
• A Finish That Holds Up in Plain Sight - The black powder-coat is not a cosmetic afterthought - it is a durable surface treatment chosen for applications where the hardware stays exposed, resisting wear in the same environments where appearance is a priority.
• Versatile Across Project Types - Approved for both residential and commercial structural connections, including glulam beam assemblies, this hanger covers a broad range of exposed-framing projects without requiring a specialty substitute.

Specifications

• MPN: OU412
• Joist Size: 4x12
• Gauge: 7
• Width: 3-9/16 in.
• Height: 11 in.
• Coating / Material: Powder Coating, Black
• Mount Type: Face-Mount
• Required Fasteners: 3/4 in. diameter anchor bolts (sold separately)
• Country of Origin: United States

Approved Applications

• Ornamental and exposed timber framing where visible hardware aesthetics are a priority
• Face-mount joist-to-header connections in 4x12 lumber assemblies
• Residential and commercial structural connections requiring a decorative black finish
• Glulam beam assemblies - additional glulam beam widths are available; contact us for configurable options and special orders

Installation Notes

• Install with 3/4 in. diameter anchor bolts.
• Additional glulam beam widths are available. for configurable options and special orders.

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

Frequently Asked Questions

What joist size is the OU412 designed to fit?

The OU412 is precisely dimensioned to fit standard 4x12 lumber, ensuring a secure and accurate fit for that specific joist size.

What type of fasteners are required to install the OU412?

The OU412 is engineered for installation with 3/4 in. diameter anchor bolts, which provide a secure, code-compliant connection.

Is the OU412 suitable for applications where the hardware will be visible?

Yes. The OU412 is specifically designed for ornamental and exposed timber framing applications. Its black powder-coat finish delivers a clean, decorative, and uniform appearance that is well-suited for visible structural connections in both residential and commercial settings.

What are the overall dimensions and gauge of the OU412?

The OU412 measures 3-9/16 in. wide and 11 in. tall, and is constructed from 7-gauge steel, providing substantial load-bearing capacity in a face-mount configuration.