The Simpson ACBH3X15.37-KT is a concealed beam hanger kit machined from aluminum and built for the demanding requirements of mass timber construction. With an allowable stress design load capacity of up to 20 kips, it is the strongest connector in the Simpson line of concealed end-grain beam hangers, making it a trusted choice for structural beam-to-beam and beam-to-column connections in engineered wood, glulam, and cross-laminated timber assemblies. The kit arrives complete with two aluminum backplates and 48 Strong-Drive SDCF22614 fully threaded Timber-CF structural screws, so everything needed for one complete concealed connection is ready to go from the moment it arrives on the job.

Key Features

• Highest-capacity concealed end-grain hanger in the Simpson line - an allowable stress design load capacity of up to 20 kips gives structural engineers the confidence to specify this connector on demanding mass timber projects without compromise.
• Fully concealed connection design - hardware remains hidden within the beam, preserving a clean wood-only aesthetic that architects and designers require for exposed timber interiors.
• One- and two-hour fire resistance ratings per ASTM E119 - the concealed aluminum construction contributes directly to fire-rated assembly performance, helping projects meet code requirements without added cladding or cover.
• Recommended for beam-to-beam connections in any Seismic Design Category - broad seismic applicability simplifies specification across a wide range of project locations and structural systems.
• Factory installation using included Strong-Drive SDCF22614 screws - fully threaded Timber-CF structural screws are included in the kit, enabling efficient factory pre-assembly and reducing the number of variables to manage on site.
• Beam length tolerance of +/- 1/16 in. on each end - generous fit-up tolerance accommodates real-world field conditions and speeds up beam placement during erection.
• Multiple router options available - flexibility in routing methods allows contractors and fabricators to match the installation approach to the specific needs of the jobsite.
• Machined from aluminum - the material choice delivers the high strength-to-weight ratio and corrosion resistance appropriate for structural timber applications while keeping the connector profile compact within the beam.

Why This Product

• One kit, one complete connection - the ACBH3X15.37-KT bundles both backplates and all 48 required SDCF22614 screws into a single kit, eliminating the need to source fasteners separately and reducing procurement steps for fabricators and contractors.
• Architectural and structural performance in one connector - the fully concealed design simultaneously satisfies the wood-only aesthetic demanded by mass timber architecture and delivers certified one- and two-hour fire resistance ratings per ASTM E119, removing the common trade-off between appearance and code compliance.
• Engineered for mass timber from the ground up - unlike adapted light-frame hardware, this connector is machined specifically for the rigors of mass timber construction and is compatible with engineered wood, glulam, structural composite lumber, and cross-laminated timber beam systems.
• Made in the United States with reliable domestic availability - Simpson manufactures and stocks the ACBH line domestically, supporting more predictable project timelines for new construction and large-scale timber framing programs.

Specifications

• Model Number (MPN): ACBH3X15.37-KT
• Width: 3 in.
• Height: 15-3/8 in.
• Material: Aluminum
• Finish: Aluminum
• Load Capacity (ASD): Up to 20 kips
• Fire Resistance Rating: One-hour and two-hour per ASTM E119
• Beam Length Tolerance: +/-1/16 in. on each end
• Installation Fasteners: (48) Strong-Drive SDCF22614 screws (included)
• Country of Origin: United States

Approved Applications

• Mass Timber Construction: Designed specifically for the rigors of mass timber building systems.
• Engineered Wood: Suitable for engineered wood beam-to-beam and beam-to-column connections.
• Beam-to-Beam Connections: Recommended for use in any Seismic Design Category.
• Beam-to-Column Connections: Recommended for use in Seismic Design Category A or B.

What's Included

The ACBH3X15.37-KT kit contains everything required to complete one full concealed beam connection:

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