The Simpson BCS2-3/6Z ZMAX Galvanized Post Cap from Simpson gives contractors and builders a reliable, engineered connection between a triple 2x beam and a 6x post. Built from 18-gauge steel with double-shear nailing between the beam and post for added strength, this post cap is significantly stronger than angled nailing or screw fastening - making it a solid choice for wood decks, patio covers, and other top-supported exterior framing projects. The ZMAX galvanized coating delivers extra corrosion resistance for exterior and treated-wood applications, so the connection holds up in the conditions where these structures actually live.

Key Features

• Double-shear nailing between beam and post - distributes load more effectively across the connection, delivering greater strength than angled nailing or screw fastening alone
• Positive post-to-beam connection - locks the structural members together securely, reducing movement and improving overall framing integrity on wood decks and patio covers
• Eliminates nailing into end grain and reduces post splitting risk - protects the post from common installation damage that can compromise long-term structural performance
• 18-gauge steel construction - provides a sturdy, code-friendly connector sized for a triple 2x beam on a 6x post without adding unnecessary bulk to the framing
• ZMAX galvanized finish - offers extra corrosion resistance purpose-built for exterior use and compatibility with treated lumber, helping the connector last alongside the structure it supports
• Installs with 16d common nails - uses a widely available fastener type, keeping installation straightforward and consistent with standard framing practices
• Not recommended for non top-supported installations such as fences or unbraced carports - knowing where this cap is and is not appropriate helps buyers select the right connector the first time and avoid callbacks

Why This Product

• Stronger by design, not just by material - double-shear nailing is an engineered advantage built into the BCS2-3/6Z, giving the beam-to-post connection more load-carrying capacity than conventional angled nailing or screw fastening methods can achieve
• Built for real outdoor conditions - the ZMAX galvanized coating goes beyond standard galvanization to resist corrosion in the exterior and treated-wood environments where post caps are actually installed and expected to perform for years
• Protects both the post and the connection - by eliminating end-grain nailing and reducing the chance of post splitting during installation, this cap helps preserve the structural integrity of the post itself, not just the joint
• Fits a specific, common framing scenario precisely - engineered specifically for a triple 2x beam on a 6x post, this connector gives builders the right-sized, right-rated hardware for a frequently used deck and patio framing configuration without adapting or improvising

Specifications

• Model Number: BCS2-3/6Z
• Member Size: Triple 2x beam, 6x post
• Width 1: 4-5/8 in.
• Width 2: 5-9/16 in.
• Length 1: 4-3/8 in.
• Length 2: 2-7/8 in.
• Height 1: 3-5/16 in.
• Height 2: 2-15/16 in.
• Gauge: 18
• Coating / Finish: ZMAX
• Install With: 16d common nails (sold separately)
• Country of Origin: United States

Approved Applications

• Wood deck post-to-beam connections
• Patio cover post-to-beam connections
• Top-supported structural framing connections using a triple 2x beam on a 6x post
• Exterior and treated-wood applications where corrosion resistance is required

Downloads and Resources

• View Spec Sheet

Frequently Asked Questions

What beam and post sizes is the BCS2-3/6Z designed for?

The BCS2-3/6Z is designed for a triple 2x (three 2x members) beam connecting to a 6x post, providing a secure and code-compliant structural connection.

Why is double-shear nailing important in this post cap?

Double-shear nailing between the beam and post distributes load more effectively across the connection, resulting in greater overall strength compared to angled nailing or screw fastening alone.

What fasteners should be used to install the BCS2-3/6Z?

The BCS2-3/6Z should be installed with 16d common nails. Always use all specified fasteners to ensure the connection performs as engineered.

Is the BCS2-3/6Z suitable for fences or unbraced carports?

No. This post cap is not recommended for non top-supported installations such as fences or unbraced carports, as post bases and caps of this type do not provide adequate resistance to prevent members from rotating about the base in those applications.

Note: Product dimensions and/or nail or screw holes may differ from picture.