The Simpson ABW46Z Adjustable Standoff Post Base is a structural connector built to securely anchor a 4x6 post or column to existing hardened concrete for decks, patio covers, and other top-supported structures. Its hybrid AB/ABE design combines slotted adjustability with engineered uplift resistance, while the ZMAX galvanized finish delivers heavy-duty corrosion protection suited to exterior conditions and pressure-treated lumber - making it a reliable solution for both new construction and retrofit applications.

Key Features

• Attaches a post to existing concrete for decks, patio covers, and other top-supported structures - connects your 4x6 post directly to hardened concrete without the need for wet-pour installation, simplifying deck and patio framing projects.
• 1-in. standoff from the concrete surface - elevates the post end above moisture that can pool on concrete, helping prevent rot and extending the service life of the post in outdoor environments.
• Slotted for adjustability - allows repositioning around the anchor bolt for optimum post placement, reducing frustration when anchor locations are not perfectly centered.
• Designed for versatility, cost-effectiveness, and maximum uplift performance - the hybrid AB/ABE construction delivers wind uplift resistance where it counts, without overbuilding or inflating material costs.
• ZMAX galvanization for extra corrosion resistance - provides a heavier zinc coating than standard galvanization, making this base appropriate for exterior applications and use with pressure-treated lumber where standard coatings fall short.
• Base gauge 12, strap gauge 16 steel construction - the heavier base plate handles bearing loads while the strap secures the post against lateral and uplift forces, balancing strength where each component needs it most.

Why This Product

• Built-in rot prevention at the post end - the 1-in. standoff keeps wood clear of surface moisture on concrete, addressing one of the most common causes of premature post failure in outdoor structures like decks and pergolas.
• ZMAX coating stands up to treated lumber and exterior exposure - because standard galvanized hardware can corrode rapidly when in contact with modern pressure-treated wood, the heavier ZMAX zinc coating on this base is specifically suited to the chemistry of treated lumber used in exterior framing.
• Adjustability makes installation more forgiving - slotted holes let you dial in post position even when anchor bolts are slightly off-center, saving time and avoiding costly corrections during deck or patio cover framing.
• Wind uplift engineering where it matters most - the ABW46Z is designed with maximum uplift performance as a priority, making it well suited for patio covers, pergolas, and deck structures in areas subject to wind load requirements.

Specifications

• Model Number: ABW46Z
• Nominal Post Size: 4x6
• Steel Gauge: Base 12; strap 16
• Width: 3-9/16 in.
• Height: 3 in.
• Length: 5-9/16 in.
• Coating/Finish: ZMAX
• Install With: 10d common nails or #9 x 1-1/2 in. Strong-Drive SD screws (sold separately)
• Country of Origin: United States

Approved Applications

• Decks and deck framing connections
• Patio covers and pergolas
• Other top-supported post and column structures
• Exterior applications requiring corrosion-resistant hardware
• Applications using pressure-treated lumber where ZMAX coating is recommended

Frequently Asked Questions

What is the purpose of the 1-inch standoff on the ABW46Z?

The 1-in. standoff elevates the base of the post above the concrete surface, helping to prevent moisture accumulation at the post end. This design feature significantly reduces the risk of rot and extends the service life of the post in exterior environments.

What fasteners are approved for installing the ABW46Z?

The ABW46Z is approved for installation with 10d common nails or #9 x 1-1/2 in. Strong-Drive SD connector screws. Because the connector features a G185 ZMAX galvanized finish, hot-dip galvanized fasteners meeting the specifications of ASTM A153 are required.

What makes the ZMAX coating different from standard galvanization?

ZMAX galvanization provides a heavier zinc coating than standard G90 galvanization, offering extra corrosion resistance specifically suited for exterior applications and use with treated wood. This makes the ABW46Z an appropriate choice in environments where standard hardware would be prone to premature corrosion.

Is the ABW46Z adjustable, and how does that adjustability work?

Yes. The ABW46Z features slotted holes in the base plate, allowing the connector to be shifted around the anchor bolt during installation. This adjustability helps achieve optimum post placement even when the anchor bolt is not positioned perfectly, providing installation flexibility without sacrificing structural performance.

Note: Product dimensions and/or nail or screw holes may differ from picture. Please see item description for specifications.