The Simpson CB46SS Stainless Steel Column Base is engineered to connect posts to concrete foundations across a wide range of lumber, glulam, and engineered wood product sizes. Designed for a nominal 4x6 column, this base is either cast-in-place or wet set into concrete so that the bottom of the base plate sits flush with the concrete surface, providing full post bearing. Built from 7-gauge stainless steel, the CB46SS delivers high structural values and rugged performance, making it a dependable choice for columns subjected to demanding load conditions in high and severe corrosion environments.

Key Features

• Increased uplift resistance for wind or seismic loading - keeps the column connection secure under the lateral and upward forces that earthquakes and high winds place on a structure, adding a critical layer of safety.
• Bolt hole locations meet code-required spacing for optimal capacity - takes the guesswork out of fastener placement, ensuring the connection performs at its rated load values while keeping inspections straightforward.
• Cast-in-place or wet-set installation - the base plate sits flush with the concrete surface to provide full post bearing, distributing load evenly and reducing point stress at the base of the column.
• 7-gauge stainless steel construction - the heavier gauge delivers the structural rigidity needed for high-load column applications, while the stainless steel material resists corrosion in high and severe exposure environments where standard finishes would deteriorate.
• Compatible with lumber, glulam, and engineered wood products - broad material compatibility means this base works across a variety of framing systems without requiring special adapters or modifications.

Why This Product

• Built for corrosive environments - the stainless steel finish provides high and severe corrosion resistance, making this column base a sound long-term investment for coastal, high-moisture, or chemically exposed job sites where standard steel connectors would fail prematurely.
• Engineered for structural confidence - the combination of 7-gauge steel, code-compliant bolt hole spacing, and increased uplift resistance means the CB46SS is sized and designed specifically for columns that carry significant loads under wind or seismic conditions.
• Flush-bearing installation simplifies forming and finishing - because the base plate sets flush with the concrete surface, contractors get a clean, full-bearing connection without raised hardware to work around, keeping the post plumb and the load path direct.
• Wide wood product compatibility - acceptance of lumber, glulam, and engineered wood products sized for a nominal 4x6 column gives designers and builders flexibility to specify the framing material that best fits the project without changing the connector.

Specifications

• Manufacturer Part Number (MPN): CB46SS
• Nominal Column Size: 4x6
• Width 1: 3-9/16 in.
• Width 2: 5-1/2 in.
• Material: Stainless Steel
• Finish: Stainless Steel
• Gauge: 7-Gauge
• Corrosion Resistance: High / Severe
• Country of Origin: United States

Approved Applications

• Connecting posts to concrete foundations in structural framing applications
• Compatible with lumber, glulam, and engineered wood products sized for a nominal 4x6 column
• Cast-in-place or wet-set concrete installations where flush base plate bearing is required
• Columns requiring high structural values in high or severe corrosion environments
• Structural applications demanding increased uplift resistance under wind or seismic loading

What's Included / Install With

• 1x Simpson Strong-Tie CB46SS Stainless-Steel Column Base (4x6)
• Installs with (2) 5/8-in. diameter stainless-steel machine bolts (sold separately)

Options

• Contact us for Configurable Options and Special orders

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

Frequently Asked Questions

What column size is the CB46SS designed for?

The CB46SS is designed for a nominal 4x6 column size and is compatible with lumber, glulam, and engineered wood products of that size.

How is the CB46SS installed into concrete?

The CB46SS is either cast-in-place or wet set into concrete so that the bottom of the base plate sits flush with the concrete surface, providing full post bearing for the column above.

Why is stainless steel used for this column base?

The CB46SS is made from 7-gauge stainless steel to provide high and severe corrosion resistance, making it suitable for environments where standard steel would be prone to significant corrosion.

What hardware is needed to install the CB46SS?

The CB46SS is installed with two 5/8-inch diameter stainless-steel machine bolts. The bolt hole locations are designed to meet code-required spacing for optimal load capacity.