The Simpson 3-1/8 in. Beam 6X Post HDG End Column Cap is a heavy-duty structural connector from Simpson engineered for end-of-beam column-to-beam connections in wood construction. Designed specifically for use with a 3-1/8 in. beam and a 6X post, this end column cap delivers reliable load transfer and uplift resistance in structural framing applications where performance and code compliance are critical. Its Hot Dip Galvanized finish makes it well suited for environments where long-term corrosion resistance is a priority.

Key Features

• 7-gauge steel construction - provides the structural rigidity needed to handle demanding column-to-beam load transfer in wood post and beam assemblies
• Hot Dip Galvanized finish - delivers enhanced corrosion resistance for applications exposed to moisture or harsh conditions, extending the service life of the connection
• Extended seat bearing surface - projects beyond one side of the column to distribute beam load more effectively, improving overall connection performance
• Certified welds - give installers confidence in consistent strength and dependable load ratings at every connection point
• Designed for 3-1/8 in. beam and 6X post - purpose-built sizing ensures a precise fit with compatible lumber dimensions, reducing guesswork during installation
• Strong uplift resistance - supports structural framing in high-demand conditions such as earthquake or wind loading where uplift forces must be reliably managed
• NDS-compliant bolt spacing - supports proper fastener placement using 5/8 in. machine bolts for a connection that meets recognized structural design standards
• Made in the United States - domestic manufacturing supports consistent quality standards throughout production

Why This Product

• Purpose-built for end-of-beam applications - unlike standard column caps, this connector is specifically configured for end positions where beam load must be transferred efficiently at the post, making it the right choice for that critical framing location
• HDG finish for long-term durability - the Hot Dip Galvanized coating provides a higher level of corrosion protection than standard finishes, making this end column cap a dependable option for wood post and beam assemblies in challenging environments
• Engineered uplift capacity for code-sensitive projects - with strong uplift load resistance and NDS-compliant fastener requirements, this connector supports structural framing projects where wind and seismic performance must be documented and verified
• Straightforward installation with four bolts - the connector secures with 5/8 in. machine bolts at both the beam and post, keeping the installation process clear and consistent for structural framing crews

Specifications

• Model Number: ECC3 1/4-6HDG
• Description: 3-1/8" Beam, 6X Post HDG End Column Cap
• Material: 7 Gauge Steel
• Finish: Hot Dip Galvanized
• Required Fasteners: 5/8" Machine Bolts - Beam (2), Post (2)
• Width 1: 3-1/4 in.
• Width 2: 5-1/2 in.
• Length: 7-1/2 in.
• Height 1: 6-1/2 in.
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Structural framing applications requiring strong uplift resistance under earthquake or wind loading
• Wood post and beam assemblies utilizing 6X post members
• Connections requiring NDS-compliant bolt spacing for optimal structural performance

What's Included

• 1x Simpson Strong-Tie ECC3 1/4-6HDG End Column Cap
• Note: Fasteners (5/8" Machine Bolts) are required and sold separately.

Options

• Contact us for Configurable Options and Special orders
• Straps may be rotated 90 deg. (see SPECS)
• For special, custom or rough-cut lumber sizes, provide dimensions. An optional W2 dimension may be specified. (The W2 dimension on straps rotated 90 deg. is limited by the W1 dimension.)

Frequently Asked Questions

What beam and post sizes is the ECC3 1/4-6HDG designed for?

This end column cap is specifically designed for use with a 3-1/8" beam and a 6X post, making it important to confirm your lumber dimensions match before installation.

What fasteners are required to install this end column cap?

Installation requires 5/8" machine bolts - two for the beam and two for the post - for a total of four bolts to complete the connection.

What makes this end column cap suitable for outdoor or exposed applications?

The ECC3 1/4-6HDG features a Hot Dip Galvanized (HDG) finish applied to 7-gauge steel, providing enhanced corrosion resistance and long-term durability in conditions where standard finishes may not hold up as well.

What type of structural connection is this end column cap designed for?

The ECC3 1/4-6HDG is engineered specifically for end-of-beam column-to-beam connections in wood construction. Its extended bearing seat distributes load beyond one side of the column, and the design supports increased uplift loads for earthquake or wind loading applications while meeting NDS bolt spacing code requirements.