The Simpson CBSQ86-SDS2HDG Hot-Dip Galvanized Standoff Column Base delivers a code-compliant, corrosion-resistant connection between a nominal 6x8 post or column and a concrete footing, making it a dependable choice for decks, patio covers, and other top-supported structures. A built-in 1 in. standoff elevates the post end above the concrete surface to help protect against moisture-related decay, while the hot-dip galvanized finish stands up to the demands of exterior environments and treated-wood applications. Shipped with the base plate pre-assembled and bundled with 1/4 in. x 2 in. Strong-Drive SDS Heavy-Duty Connector screws, this column base is ready to put to work from the moment it arrives.

Key Features

• Installs with Strong-Drive SDS screws (included) - the screw-driven fastening system speeds up installation, reduces the visible reveal at the post face, and delivers high load capacity without requiring specialized tools.
• 1 in. code-compliant standoff design - keeps the post or column end raised above the concrete surface, meeting code requirements and significantly reducing the risk of decay caused by moisture contact at the base of the column.
• Embeds directly in wet concrete at time of pour - setting the base during the foundation pour creates a strong, integral anchor point and eliminates the need for post-cure anchor bolt drilling in many applications.
• Hot-dip galvanized finish - provides a thicker, more durable layer of corrosion protection than standard coatings, making this column base well suited for exterior decks, patio structures, and installations using treated lumber where corrosive exposure is a concern.
• Dual-gauge steel construction (12-gauge base, 7-gauge strap) - the heavier strap gauge reinforces the connection where structural loads are highest, giving builders confidence in long-term performance under top-supported loads.
• Ships with base plate pre-assembled - reduces on-site prep time and the chance of assembly error, so installation can begin immediately upon delivery.

Why This Product

• Built-in decay protection at the post end - the 1 in. standoff is not just a code checkbox; it actively separates the vulnerable end grain of a post from pooling water and concrete moisture, extending the service life of the entire structural connection.
• Superior corrosion resistance for tough exterior conditions - hot-dip galvanization delivers a robust protective layer that holds up in harsh outdoor environments and alongside the chemicals present in pressure-treated lumber, reducing long-term maintenance concerns for decks and patio covers.
• Faster, cleaner installation with included hardware - Strong-Drive SDS screws arrive in the box, so there is no separate hardware sourcing required; the screw-drive method also produces a lower-profile reveal for a cleaner finished appearance at the post base.
• American-made quality sized for heavy structural posts - designed specifically for nominal 6x8 members, this column base addresses the demands of larger-scale deck and patio cover construction where an undersized connector is not an acceptable option.

Specifications

• MPN: CBSQ86-SDS2HDG
• Member Size: 6x8
• Width 1: 7-1/2 in.
• Width 2: 5-3/8 in.
• Depth: 6-1/8 in.
• Height: 8-11/16 in.
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• Gauge: Base 12; strap 7
• Standoff Height: 1 in.
• Install With: 1/4 in. x 2 in. Strong-Drive SDS Heavy-Duty Connector screws (included)
• Country of Origin: United States

Approved Applications

• Decks and deck post bases
• Patio covers and shade structures
• Other top-supported post and column structures
• Exterior applications requiring corrosion-resistant hardware
• Applications using treated wood where enhanced corrosion resistance is required

What's Included

Each pack contains (1) CBSQ86-SDS2HDG Column Base, 1/4 in. x 2 in. Strong-Drive SDS Heavy-Duty Connector screws.

Downloads and Resources

• View Spec Sheet

Frequently Asked Questions

What size post or column is this base designed for?

This column base is designed for a nominal 6x8 post or column, making it ideal for heavy structural applications such as decks and patio covers.

Why is the 1 in. standoff important?

The 1 in. standoff keeps the bottom of the post or column elevated above the concrete surface. This design meets code requirements and reduces the potential for moisture-related decay at the post and column ends, extending the life of the structure.

Can this column base be installed in wet concrete?

Yes. The CBSQ86-SDS2HDG is designed to embed in wet concrete at the time of pour, allowing it to be set during the foundation pour for a strong, integrated connection.

Why choose the Hot-Dip Galvanized finish for this column base?

Hot-dip galvanization (HDG) provides extra corrosion resistance compared to standard finishes, making this column base well-suited for exterior applications and use with treated wood where moisture and chemical exposure can accelerate corrosion.

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