The Simpson Strong-Tie CBSQ66-SDS2HDG Hot-Dip Galvanized 6x6 Column Base is engineered to create a reliable, code-compliant connection between structural columns and concrete footings. Built for demanding conditions, this column base delivers the corrosion resistance required for treated lumber applications, weather-exposed settings, and basement installations where moisture and water splash are ongoing concerns. Supplied with Strong-Drive SDS Heavy-Duty Connector Screws, it simplifies installation while maintaining structural integrity at the critical column-to-footing interface.

Key Features

• Hot-Dip Galvanized Finish - Provides enhanced corrosion resistance for compatibility with treated lumber chemicals and long-term performance in outdoor or moisture-exposed environments.
• 1" Standoff Height - Meets code requirements for structural posts in basements and locations exposed to weather or water splash, keeping the column base elevated above the concrete footing surface to reduce moisture contact at the post end.
• Included Strong-Drive SDS Heavy-Duty Connector Screws - Enable fast, dependable installation right out of the box while preserving a greater net section area of the column compared to traditional bolt connections.
• Rated for Treated Lumber - Specifically approved for use with treated wood, making it a dependable choice for applications where chemical-resistant hardware is required.
• Broad Approved Application Range - Suited for structural posts in basements, posts exposed to weather or water splash, and column-to-concrete-footing connections where structural load transfer is critical.

Why This Product

• Built for harsh conditions - The hot-dip galvanized construction is designed to hold up against the corrosive chemicals in treated lumber and the ongoing effects of moisture, making it well-suited for both exterior structures and below-grade installations.
• Code-compliant standoff design - The 1" standoff meets code requirements for basement posts and weather-exposed column applications, reducing the risk of non-compliance on inspected projects.
• Screw-fastened connection preserves column strength - Using the included Strong-Drive SDS Heavy-Duty Connector Screws instead of bolts maintains a greater net section area in the column, which supports stronger overall structural performance at the post base.
• Everything needed is included - The column base ships with the required Strong-Drive SDS Heavy-Duty Connector Screws, so contractors and builders can move straight to installation without sourcing separate fasteners.

Specifications

• Manufacturer: Simpson Strong-Tie
• Manufacturer Part Number (MPN): CBSQ66-SDS2HDG
• Column Size: 6x6
• Finish: Hot-Dip Galvanized
• For Treated Lumber: Yes
• Standoff Height: 1"
• Fastener Type Included: Strong-Drive SDS Heavy-Duty Connector Screws
• Width 1: 5-1/2 in.
• Width 2: 5-1/2 in.
• Depth: 6-7/8 in.
• Height: 8-3/4 in.

Approved Applications

• Structural posts installed in basements
• Posts exposed to weather or water splash
• Connecting columns to concrete footing surfaces
• Applications requiring treated lumber compatibility
• Structures where greater column net section area is required compared to bolt-fastened alternatives

What's Included

• 1x Simpson Strong-Tie CBSQ66-SDS2HDG Hot-Dip Galvanized 6x6 Column Base
• Strong-Drive SDS Heavy-Duty Connector Screws

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

Frequently Asked Questions

Is the CBSQ66-SDS2HDG suitable for use with treated lumber?

Yes, this column base is rated for use with treated lumber. The hot-dip galvanized finish provides enhanced corrosion resistance that makes it compatible with the chemicals present in treated wood, as well as outdoor and weather-exposed environments.

Why does this column base have a 1" standoff?

The 1" standoff is a code-required feature for structural posts installed in basements or in locations exposed to weather or water splash. It keeps the base of the column elevated above the concrete footing, helping to prevent direct moisture contact at the column's end grain.

What fasteners are included, and why are they preferred over bolts?

The CBSQ66-SDS2HDG is supplied with Strong-Drive SDS Heavy-Duty Connector screws. These screws allow for faster installation compared to traditional bolts and preserve a greater net section area of the column, which helps maintain the structural integrity of the wood. They also reduce the exposed hardware profile at the column base, resulting in a cleaner appearance.

What size column is this base designed for?

This column base is designed for 6x6 structural columns, serving as the interface between a 6x6 post and its concrete foundation footing.