The Simpson PBST66Z PBST ZMAX Galvanized Standoff Post Base for 6x6 is a cast-in-place connector engineered by Simpson to create strong, dependable wood-to-concrete connections for decks, patio covers, porches, and other outdoor structures. Designed to set flush in wet concrete, this standoff post base keeps 6x6 nominal lumber posts firmly anchored while incorporating built-in structural enhancements and a heavy-duty corrosion-resistant finish - making it a reliable choice for exposed outdoor applications where performance and longevity matter most.

Key Features

• 1 in. standoff between post and concrete - meets code requirements while elevating the wood post above the concrete surface, helping reduce moisture contact and the risk of rot over time
• S-shaped stiffening tabs - enhance load-bearing performance and provide increased download capacity, giving the connection greater structural integrity under demanding loads
• Embossed vertical straps - increase overall strength and stability of the post base, adding rigidity throughout the assembly
• ZMAX galvanized coating - offers superior corrosion resistance for outdoor applications, making this connector well-suited for weather-exposed installations such as deck posts and porch columns
• Compatible with nails, bolts, or Strong-Drive SD Connector screws - gives installers flexibility to use the fastener type that best fits their project requirements
• Flush installation in wet concrete with shallow embedment depth - simplifies the setting process during concrete pours, reducing labor time and alignment challenges on the job site
• 12 ga. steel construction for both base and strap - delivers a robust, heavy-duty build that stands up to the structural demands of load-bearing post connections

Why This Product

• Engineered for code-compliant outdoor post connections - the combination of the 1 in. standoff design and ZMAX coating directly addresses two of the most common failure points in post-to-concrete connections: code compliance and moisture-driven wood decay, making this a dependable long-term solution for decks, patio covers, and porches
• Structural upgrades that go beyond a standard post base - S-shaped stiffening tabs and embossed vertical straps work together to increase download capacity and overall stability, so the connection performs reliably under real-world structural loads
• Flexible fastening options simplify installation - support for nails, 1/2 in. diameter bolts, or Strong-Drive SD Connector screws means this post base adapts to different installation methods and job site conditions without requiring specialized hardware
• American-made quality from a trusted connector brand - produced by Simpson, a manufacturer with a proven track record in structural connectors, the PBST66Z is built to consistent engineering standards for contractors and builders who need confidence in every connection

Specifications

• Model Number: PBST66Z
• Member Size: 6x6
• Coating: ZMAX
• Finish: ZMAX
• Gauge: Base 12; strap 12
• Install With: Install with (14) 0.162 in. x 3-1/2 in. nails, (14) #10 x 1-1/2 in. Strong-Drive SD Connector screws (SD10112) or (2) 1/2 in. diameter bolts (sold separately)
• Width: 5-1/2 in.
• Length: 5-3/8 in.
• Country of Origin: United States

Approved Applications

• Decks
• Patio covers
• Porches
• Other outdoor structures requiring wood-to-concrete post connections

Frequently Asked Questions

What size post is the PBST66Z designed for?

The PBST66Z is specifically designed for use with 6x6 nominal lumber posts.

Why does the PBST66Z include a 1 in. standoff between the post and concrete?

The 1 in. standoff is an engineered design feature that meets code requirements and helps protect the wood post by keeping it elevated above the concrete surface, reducing exposure to moisture that can cause rot over time.

What fastener options are compatible with the PBST66Z?

The PBST66Z can be installed using (14) 0.162 in. x 3-1/2 in. nails, (14) #10 x 1-1/2 in. Strong-Drive SD Connector screws (SD10112), or (2) 1/2 in. diameter bolts, offering flexibility depending on your project requirements.

What makes the ZMAX coating on the PBST66Z suitable for outdoor use?

The ZMAX galvanized coating provides superior corrosion resistance compared to standard galvanized finishes, making the PBST66Z well-suited for outdoor applications such as decks, patio covers, and porches where the connector is exposed to weather and moisture.

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