The Simpson ECC46HDG ECC End Column Cap is engineered by Simpson to deliver strong, reliable column-to-beam connections in end-of-beam applications throughout wood construction. The seat of the column cap provides an additional surface area of bearing that extends beyond one side of the column, helping to distribute the load from the beam and provide solid support for the connection. Built from 7-gauge steel with a hot-dip galvanized finish, this end column cap is purpose-built for exterior installations and projects involving pressure-treated lumber where durable corrosion resistance is a priority.

Key Features

• Certified welds - provide confidence in strength and loading, so builders can trust the integrity of every connection under real structural demands.
• Increased uplift load ratings - engineered to handle earthquake or wind loading, giving the connection added reliability in high-stress or code-sensitive environments.
• Bolt spacing that meets NDS code requirements - ensures optimal performance and simplifies the inspection and approval process on job sites.
• Diamond holes for temporary fastening - allow installers to hold the cap in position before final bolting, making alignment and placement faster and easier.
• Sized for a nominal 4x beam and 6x post - delivers a precise, engineered fit for end-column applications using these specific member sizes, eliminating guesswork during framing.
• Hot-dip galvanized finish - offers extra corrosion resistance compared to standard coatings, making this cap a dependable choice for exterior decks, pergolas, and structures built with treated wood.
• 7-gauge steel construction - provides a heavy-duty foundation that supports the structural loads expected in post-and-beam framing applications.

Why This Product

• End-of-beam design built for a specific structural challenge - unlike standard column caps, the ECC seat extends bearing surface beyond one side of the column, directly addressing the load distribution demands unique to end-of-beam post connections.
• Ready for exterior and treated-wood projects - the hot-dip galvanized coating provides a higher level of corrosion protection than zinc plating or paint, making this cap a practical fit for outdoor structures exposed to moisture and preservative chemicals.
• Engineered for code compliance from the start - certified welds, NDS-compliant bolt spacing, and rated uplift loads for seismic and wind conditions mean this connector is designed to meet the documentation and inspection requirements builders face on permitted projects.
• Installs with standard hardware - the connector is designed for use with (4) 5/8 in. diameter machine bolts, working with commonly available fasteners and keeping the installation process straightforward on the job site.

Specifications

• Model Number: ECC46HDG
• Member Size: 4x beam, 6x post
• Width 1: 3-5/8 in.
• Width 2: 5-1/2 in.
• Length: 8-1/2 in.
• Height 1: 6-1/2 in.
• Gauge: 7
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• Installation Fasteners: Install with (4) 5/8 in. diameter machine bolts (sold separately)
• Country of Origin: United States

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.)

Downloads and Resources

• View Specifications

Frequently Asked Questions

What lumber sizes does the ECC46HDG fit?

The ECC46HDG is designed for use with a nominal 4x beam and a nominal 6x post, making it specifically suited for end-of-beam column-to-beam connections in those member sizes.

Why is hot-dip galvanization important for this column cap?

Hot-dip galvanization (HDG) provides extra corrosion resistance, making the ECC46HDG well suited for exterior applications and use with pressure-treated wood where standard coatings may not offer sufficient protection against moisture and chemicals.

How is the ECC46HDG installed?

The ECC46HDG is installed using (4) 5/8 in. diameter machine bolts. The bolt spacing is engineered to meet NDS code requirements, and diamond holes are included to allow for temporary fastening during the installation process.

Is the ECC46HDG rated for high-wind or seismic conditions?

Yes. The ECC46HDG features certified welds and increased uplift load values specifically to support performance under earthquake or wind loading conditions, providing added confidence in structurally demanding environments.

Note: Product dimensions may differ from picture.