The Simpson ECCQ78SDS2.5 End Column Cap is a heavy-duty structural connector engineered for end-of-beam column-to-beam connections in wood construction. Designed by Simpson to pair a 6-3/4 in. wide beam with an 8x post, this column cap delivers the load-path integrity and uplift resistance required in seismic and high-wind applications - all in a low-profile form that keeps connections clean and unobtrusive.

Key Features

• Extended bearing seat design - distributes beam load across a greater surface area at the connection point, reducing stress concentration and improving long-term structural performance.
• 3-gauge steel construction with Simpson Strong-Tie Gray paint finish - provides exceptional strength and corrosion resistance suited to demanding structural environments.
• Included 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws for both beam and post attachment - eliminates the need to source separate fasteners, enabling faster installation without compromising connection strength.
• Diamond holes for temporary fastening - allow the installer to hold the connector securely in position during layout and alignment before final fastening, reducing errors and saving time on the job.
• Low-profile connector format - delivers high-strength performance without the bulk of traditional through-bolt hardware, making it well-suited to exposed timber framing where appearance matters.
• Approved for seismic and wind uplift applications - gives builders and engineers the documentation and confidence needed for code-sensitive structural connections.

Why This Product

• Purpose-built fit for 6-3/4 in. beam and 8x post combinations - eliminates guesswork and fabrication workarounds, ensuring a precise, engineered fit for heavy timber end-of-beam connections right out of the box.
• Fasteners included for both beam and post - the Strong-Drive SDS screws bundled with this cap cover the full connection, so installers arrive on site with everything needed for a complete, high-strength attachment.
• Verified for seismic and wind loading - this cap is explicitly approved for applications requiring enhanced uplift resistance, giving contractors a reliable, code-supportable choice for structurally critical connections.
• Made in the United States to Simpson quality standards - domestic manufacturing under the Simpson brand ensures consistent material quality and dimensional accuracy across every unit.

Specifications

• Model Number: ECCQ78SDS2.5
• Beam Width: 6-3/4 in.
• Width 2: 7-1/2 in.
• Width 1: 6-7/8 in.
• Height: 7 in.
• Length: 8-1/2 in.
• Dimension W1: 6-7/8 in.
• Dimension W2: 7-1/2 in.
• Dimension L: 8-1/2 in.
• Dimension H: 7 in.
• Material: 3-Gauge Steel
• Finish: Simpson Strong-Tie Gray Paint
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Structural connections requiring enhanced uplift resistance for seismic (earthquake) loading
• Structural connections requiring enhanced uplift resistance for wind loading
• Applications where a low-profile connector is preferred over standard through-bolt hardware

What's Included

• 14 x 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector Screws for beam attachment
• 14 x 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector Screws for post attachment

Installation

Fasten with the included 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector screws provided with the column cap. The diamond holes allow for temporary fastening to hold the connector in position during installation.

Options

• Contact us for Configurable Options and Special orders
  
• Straps may be rotated 90 deg.
  

Frequently Asked Questions

What beam and post sizes is the ECCQ78SDS2.5 designed to fit?

The ECCQ78SDS2.5 is designed for use with a 6-3/4 in. wide beam and an 8x post. Its key dimensions include a W1 of 6-7/8 in., a W2 of 7-1/2 in., a length of 8-1/2 in., and a height of 7 in., making it suitable for heavy timber end-of-beam column connections.

What fasteners are included with the ECCQ78SDS2.5, and why are they preferred over standard bolts?

The ECCQ78SDS2.5 comes supplied with 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector screws for both beam and post attachment. These screws are preferred over standard through bolts because they attach to a greater net section area of the column and provide a lower-profile installation result while still delivering high-strength performance.

What material and finish is used on the ECCQ78SDS2.5?

The ECCQ78SDS2.5 is fabricated from 3-gauge steel and features a Simpson Strong-Tie Gray paint finish, which provides corrosion resistance for demanding structural applications.

Is the ECCQ78SDS2.5 suitable for use in areas subject to high wind or seismic activity?

Yes. The ECCQ78SDS2.5 features increased uplift load values specifically designed to meet the demands of earthquake or wind loading conditions, making it appropriate for use in structurally demanding environments where enhanced uplift resistance is required.