The Simpson KBS1Z Knee-Brace Stabilizer is a structural connector from Simpson designed to create a secure connection between knee bracing and columns or beams, helping to stabilize freestanding structures and satisfy many prescriptive deck bracing requirements, including those outlined in AWC's DCA6 Prescriptive Residential Wood Deck Construction Guide. Factory-formed at a 45 deg. angle and compatible with 2x, 4x, and 6x in-line post-to-beam configurations, this connector offers a straightforward nailed installation for decks and other outdoor structures requiring reliable lateral support.

Key Features

• Factory-formed at a 45 deg. angle with field-adjustable slots - arrives ready for the most common bracing angle, yet can be bent one time to a different angle along its slots, giving installers flexibility without requiring additional hardware.
• Compatible with 2x, 4x, and 6x in-line post-to-beam configurations - covers a wide range of common framing member sizes, reducing the need to source multiple connector types for a single project.
• Install single KBS1Z on each end for a 2x knee brace; install two on each end for equal-width members; install in pairs for beam-to-post applications - clear, application-specific guidance means the right connection is made every time, supporting structural integrity across different build scenarios.
• Made from 16-gauge steel - provides the structural strength needed for load-bearing knee brace connections in deck and post-and-beam construction.
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications - the heavy-duty coating stands up to the chemicals in pressure-treated lumber and outdoor exposure, helping the connector maintain performance over time without accelerated deterioration.

Why This Product

• Built for code compliance on residential decks - the KBS1Z is specifically engineered to help meet many prescriptive deck bracing requirements, including AWC's DCA6 guide, making it a practical choice for homeowners and builders working toward local building department approval.
• ZMAX coating goes beyond standard galvanization - for exterior installations and projects using treated wood, the added corrosion resistance of ZMAX galvanization means this connector is suited for the demanding conditions where standard coatings often fall short.
• Versatile angle and member-size compatibility in a single connector - whether the brace is 2x, 4x, or 6x and whether the angle is 45 deg. or needs to be field-adjusted, this connector adapts to the job rather than requiring multiple SKUs or custom fabrication.
• Simple nailed installation keeps labor straightforward - no special tools or fastener systems are required beyond standard nails, making this connector accessible for both professional contractors and DIY deck builders.

Specifications

• Model Number: KBS1Z
• Gauge: 16
• Width: 1-1/2 in.
• Length: 3 in.
• Coating/Finish: ZMAX
• Install With: 8d or 8d x 1-1/2 in. nails
• Country of Origin: United States

Approved Applications

• DIY/Home Projects

Frequently Asked Questions

Can the KBS1Z be installed at an angle other than 45 deg.?

Yes. For installations at an angle other than 45 deg., bend the KBS1Z along its slots to the desired angle. However, it must be bent one time only to maintain structural integrity.

What fasteners are required to install the KBS1Z?

The KBS1Z should be installed with 8d or 8d x 1-1/2 in. nails for a proper and secure connection.

How many KBS1Z connectors are needed per brace end for equal-width members?

For equal-width members, install two (2) KBS1Z connectors on each end of the brace. For a 2x knee brace specifically, a single KBS1Z on each end is sufficient. For beam-to-post applications, install in pairs.

Why does the KBS1Z feature ZMAX galvanization?

ZMAX galvanization provides extra corrosion resistance, making the KBS1Z well-suited for exterior applications and installations involving treated wood where standard coatings may be insufficient.

Note: Product dimensions and/or screw or bolt holes may differ from picture. Check with your local building department for deck bracing requirements.