The Simpson 4x4 Column Base Standoff Stainless Steel Quick-Install is a structural post base connector from Simpson engineered to create a secure, load-bearing connection between a 4x4 wood column and a concrete footing surface. Purpose-built for residential and commercial framing applications - including decks, pergolas, patio covers, and covered outdoor structures - this column base transmits structural loads from the post down to the concrete foundation through a code-compliant load path. The stainless steel construction delivers lasting corrosion resistance in demanding outdoor environments, while the quick-install design uses Strong-Drive SDS Heavy-Duty Connector Screws to simplify and accelerate the fastening process compared to traditional bolt-based systems.

Key Features

• Stainless Steel Construction - Provides superior corrosion resistance for long-term performance in harsh, moisture-prone, and coastal outdoor environments where finish integrity is critical.
• Quick-Install Design with Strong-Drive SDS Heavy-Duty Connector Screws - Eliminates the need for traditional through-bolts, speeding up installation and reducing the reveal profile for a cleaner finished appearance at the column base.
• 4x4 Column Compatibility - Sized precisely to accept nominal 4x4 wood posts, ensuring a proper fit for standard residential and commercial structural framing applications without field modification.
• Standoff Base Configuration - Positions the bottom of the post above the concrete surface, helping protect the end grain of the column from direct moisture contact and extending the service life of the wood member.
• Approved for Structural Load Transfer - Engineered to transmit the full structural stresses of the column to the concrete footing, making it suitable for decks, pergolas, patio covers, and other top-supported structural framing.
• Domestically Produced - Manufactured in the United States under Simpson quality standards, supporting consistent dimensional accuracy and reliable structural performance.

Why This Product

• Stainless Steel for Long-Term Outdoor Durability - The stainless steel finish makes this post base a strong choice for covered outdoor structures, deck framing, and other exterior applications where exposure to the elements demands hardware that will not corrode or degrade over time.
• Faster, Cleaner Fastening System - The Strong-Drive SDS Heavy-Duty Connector Screw installation method reduces installation time and delivers a lower-profile connection at the column base compared to conventional bolt-based column base systems.
• Reliable Load Path from Post to Foundation - Designed to transmit structural column loads directly to the concrete footing surface, this connector supports code-compliant deck post bases, pergola columns, and other top-supported structural connections with confidence.
• Trusted Simpson Engineering - Backed by Simpson engineering and manufactured in the United States, this column base connector is a dependable choice for contractors and builders who need consistent performance on structural framing projects.

Specifications

• Manufacturer: Simpson Strong-Tie
• Model Number (MPN): CBSQ44SS
• Column Size: 4x4
• Finish: Stainless Steel
• Fastener Type: Strong-Drive SDS Heavy-Duty Connector Screws
• Width 1: 3-9/16 in.
• Width 2: 3-1/2 in.
• Depth: 7-1/8 in.
• Height: 8-3/8 in.
• Country of Origin: United States

Approved Applications

• Connecting 4x4 wood columns to concrete footing surfaces in structural framing applications.
• Residential and commercial deck post bases where a column-to-concrete connection is required.
• Covered outdoor structures, pergolas, and patio covers requiring a secure post base with corrosion-resistant hardware.
• Any application where structural loads must be transmitted from a 4x4 column down to a concrete foundation.

Note: Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non-top-supported installations (such as fences or unbraced carports).

Installation Guidelines

• Use all specified fasteners. See General Notes for complete fastener requirements.
• Install the CBSQ with the bottom of the standoff flush to the top of the concrete surface.
• Post bases do not provide adequate resistance to prevent members from rotating about the base and are not recommended for non-top-supported installations such as fences or unbraced carports.

Disclaimer: Product dimensions and/or screw or bolt hole configurations may differ from product images shown. Please refer to the item description and specifications for complete and accurate product details before use.

Frequently Asked Questions

What column size is the CBSQ44SS designed to fit?

The CBSQ44SS is designed specifically for 4x4 nominal column sizes, making it suitable for standard 4x4 structural posts used in deck, pergola, and other load-bearing applications.

What type of fasteners are used with the CBSQ44SS?

The CBSQ44SS utilizes Strong-Drive SDS Heavy-Duty Connector screws. These screws enable fast installation, provide a reduced reveal profile, and deliver a greater net section area of the column compared to traditional bolt-based systems.

Why is stainless steel important for this column base?

The stainless steel construction of the CBSQ44SS offers enhanced corrosion resistance, making it well-suited for moisture-prone or corrosive environments where long-term durability and finish integrity are essential.

What is the structural purpose of the CBSQ44SS?

The CBSQ44SS serves as the critical interface between a 4x4 column and its concrete foundation. It transmits the full structural stresses of the column down to the concrete footing surface, providing a reliable and code-compliant load path from the post to the foundation.