The Simpson CBS66 CBS Galvanized Standoff Column Base for 6x6 by Simpson is engineered to anchor 6x6 posts and columns securely to concrete foundations while meeting code requirements for moisture protection. The base plate embeds in wet concrete at the time of pour, creating a permanent, load-transferring connection that channels structural stresses from the post or column down into the footing. Engineered and tested to perform, and manufactured to the highest quality standards, the CBS66 is the trusted choice of engineers and contractors who need a structural post base connection that is both stronger and safer.

Key Features

• Shipped with base plate pre-assembled - reduces on-site setup time so you can embed the anchor and move on without extra assembly steps at the job site.
• 1 in. standoff clearance required by code - keeps the bottom of the column elevated above the base plate, satisfying code requirements and protecting post ends from moisture-related decay over the life of the structure.
• Standoff design reduces potential for decay at post and column ends - the air gap between the column base and the concrete discourages moisture accumulation, extending the service life of your structural posts.
• Sized for nominal 6x6 columns and posts - provides a precise, secure fit for standard 6x6 dimensional lumber, eliminating guesswork when specifying the right connector for your project.
• Dual-gauge steel construction - base 12, strap 10 - heavier strap gauge where uplift and lateral loads are highest, so the connector performs where structural demand is greatest.
• G90 zinc galvanized coating - provides extra corrosion resistance for outdoor, exposed, and weather-prone installations where a bare steel connector would deteriorate prematurely.
• Installs with 5/8 in. diameter machine bolts - a straightforward fastening method using a common, readily available bolt size, making field installation clean and consistent.

Why This Product

• Code-compliant standoff built in from the start - the 1 in. standoff clearance is not an add-on or afterthought; it is integral to the base plate design, so the connector satisfies code requirements for exposed structural posts without any additional hardware or modification.
• Engineered and tested by Simpson - Simpson Strong-Tie connectors are engineered and tested to perform, giving engineers, contractors, and builders confidence in load path integrity at one of the most critical points in any post-and-beam or deck structure.
• Long-term durability through G90 galvanization - the zinc galvanized G90 finish delivers extra corrosion resistance, making this post base a sound choice for outdoor structures, covered patios, pergolas, and other applications where moisture exposure is a long-term concern.
• Made in the United States to the highest quality standards - domestic manufacturing under Simpson's rigorous quality controls means consistent dimensional accuracy and material integrity, reducing the risk of fit or performance issues in the field.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: CBS66
• Member Size: 6x6
• Coating / Finish: Zinc Galvanized, G90
• Steel Gauge: Base 12; strap 10
• Install With: 5/8 in. diameter machine bolts
• Country of Origin: United States

Frequently Asked Questions

How is the CBS66 installed?

The CBS66 embeds in wet concrete at the time of pour, securing the base plate to the footing. The column is then fastened to the standoff base using 5/8 in. diameter machine bolts.

What size post or column does the CBS66 support?

The CBS66 is sized for a nominal 6x6 column or post.

Why does the CBS66 have a 1 in. standoff clearance?

The 1 in. standoff clearance is required by code for structural posts that may be exposed to weather or water splash. This gap between the base plate and the bottom of the column reduces the potential for moisture-related decay at post and column ends.

What corrosion protection does the CBS66 provide?

The CBS66 features a G90 zinc galvanized coating, which provides extra corrosion resistance, making it suitable for outdoor and exposed structural applications.

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