The Simpson S/HD15B S/HDB Bolted Holdown from Simpson is engineered to deliver reliable load capacity for high-load shearwall connections, braced-wall panels, and lateral applications in light-gauge cold-formed steel framing. Ideal for bolt-on installations where the cold-formed steel stud manufacturer can prepunch the bolt holes, this holdown features a unique seat design that greatly minimizes deflection under load - making it a dependable solution for demanding structural connections where performance and installation precision both matter.

Key Features

• Unique seat design that greatly minimizes deflection under load - delivers tighter, more predictable structural performance in high-load shearwall and lateral applications, reducing movement at the connection point.
• Installs directly on the bottom track or raised above it - gives installers flexible positioning options and accommodates back-to-back configurations where eccentricity is a concern, broadening its usefulness across varying framing layouts.
• Designed for bolt-on installation with prepunched holes - pairs naturally with cold-formed steel studs that are factory-punched, streamlining field installation and reducing on-site labor.
• Bolted attachment method - the S/HDB series is specifically designed for installation with bolts into the studs or column; for screw-attached applications to a post or column, refer to the S/HDS series.
• Made from 7 ga. (171 mil) steel with a Simpson gray paint finish - heavy-gauge construction provides the structural integrity required for high-load applications, while the factory paint finish offers a consistent, corrosion-resistant surface.

Why This Product

• Built specifically for high-load cold-formed steel framing - the S/HD15B is purpose-engineered for shearwall, braced-wall panel, and lateral load scenarios, so buyers can specify it with confidence in structurally demanding light-gauge steel projects.
• Deflection-minimizing seat design sets it apart - the unique seat geometry directly reduces movement under load, a critical advantage in high-load holdown applications where connection stiffness directly affects overall wall system performance.
• Versatile installation positioning with back-to-back compatibility - the ability to mount directly on the bottom track or at a raised position, combined with suitability for back-to-back use where eccentricity is a concern, means one product can serve multiple framing conditions without requiring a different connector.
• Bolt-based connection for prepunched stud compatibility - designed to work with cold-formed steel studs that are prepunched by the manufacturer, this holdown supports efficient, repeatable installation that aligns with modern prefabrication and modular construction workflows.

Specifications

• Manufacturer Part Number (MPN): S/HD15B
• Series: S/HDB
• Height: 17 in.
• Width: 2-5/16 in.
• Thickness: 171 mil
• Gauge: 7 ga.
• Coating/Finish: Simpson Strong-Tie Gray Paint
• Installation Hardware: Install with (4) 3/4 in. diameter bolts to stud and (1) 1 in. diameter anchor bolt to structure
• Country of Origin: United States

Approved Applications

• High-load shearwall connections
• Braced-wall panel applications
• Lateral load applications
• Bolt-on applications where cold-formed steel stud manufacturer can prepunch the bolt holes
• Back-to-back installations where eccentricity is a concern

Frequently Asked Questions

How is the Simpson S/HD15B installed?

The S/HD15B is designed for installation with bolts into the studs or column. It installs with (4) 3/4 in. diameter bolts to the stud and (1) 1 in. diameter anchor bolt to the structure.

Can the S/HD15B be installed directly on the bottom track?

Yes. The S/HD15B can be installed directly on the bottom track or raised above it, and it is suitable for back-to-back applications where eccentricity is a concern.

What is the difference between the S/HDB and S/HDS series?

The S/HDB series, which includes the S/HD15B, is designed for installation with bolts. The S/HDS series is intended for attachment to a post or column using screws.

What material and finish is used on the S/HD15B?

The S/HD15B is made from 171 mil (7 ga.) steel and features a Simpson Strong-Tie gray paint finish.