The Simpson ECCQ84SDS2.5 End Column Cap is a heavy-duty structural connector engineered for end-of-beam column-to-beam connections in wood construction. Designed to seat an 8x beam over a 4x post end, this end column cap delivers high uplift resistance and is well-suited for post-and-beam framing, heavy timber construction, and structures subject to seismic or high wind loading. Fabricated from 3-gauge steel with a Simpson Strong-Tie Gray paint finish, it arrives complete with Strong-Drive SDS Heavy-Duty Connector screws so installation can begin immediately without sourcing additional fasteners.

Key Features

• 3-gauge steel construction - provides the structural mass and rigidity needed to handle demanding load conditions in heavy timber and post-and-beam applications.
• Extended seat bearing surface - distributes beam load beyond the column side, supporting reliable load transfer at end-of-beam connection points.
• Certified weld strength - consistent weld quality ensures the connector performs predictably under rated load conditions, giving builders and inspectors confidence in the connection.
• Compatible with seismic and high wind applications - approved for use in areas subject to earthquake and high wind loading, making it appropriate for code-sensitive structural projects.
• Strong-Drive SDS Heavy-Duty Connector screws included for both beam and post - eliminates the need to source separate fasteners, allowing for a fast, secure, and low-profile installation right out of the box.
• Diamond holes for temporary positioning - allow the connector to be held in place before final fastening, reducing the chance of misalignment during installation.
• Simpson Strong-Tie Gray paint finish - provides a clean, consistent appearance suited to exposed timber framing where connector aesthetics matter.

Why This Product

• Everything needed for installation is included - both beam-side and post-side Strong-Drive SDS Heavy-Duty Connector screws come in the box, so structural crews can complete the connection without hunting down compatible fasteners separately.
• Built for the most demanding structural environments - approved applications include seismic zones, high wind regions, and heavy timber construction, making this connector a practical choice wherever code compliance and load performance are non-negotiable.
• Domestic manufacturing supports consistent quality - the ECCQ84SDS2.5 is a product of the United States, and certified welds are part of its construction, supporting reliable, repeatable performance across production runs.
• Designed for a specific, precise fit - purpose-built for 8x beams and 4x post ends, this connector eliminates guesswork at the connection point and helps ensure a properly seated, structurally sound joint in end-of-beam column applications.

Specifications

• Model Number: ECCQ84SDS2.5
• Beam Width (in.): 71/2
• Width 2: 3-5/8 in.
• Width 1: 7-1/2 in.
• Height: 7 in.
• Length: 8-1/2 in.
• Dimension W1 (in.): 71/2
• Dimension W2 (in.): 3-5/8
• Dimension L (in.): 81/2
• Dimension H (in.): 7
• Material: 3-Gauge Steel
• Finish: Simpson Strong-Tie Gray Paint
• SDS Screws Included - Beam: 14 screws, 1/4" x 21/2"
• SDS Screws Included - Post: 14 screws, 1/4" x 21/2"
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Post-and-beam framing where high uplift resistance is required
• Structural connections in areas subject to seismic (earthquake) loading
• Structural connections in areas subject to high wind loading
• Heavy timber construction requiring certified weld-strength connections

What's Included

• 1x ECCQ84SDS2.5 End Column Cap
• 14x 1/4" x 21/2" Strong-Drive SDS Heavy-Duty Connector Screws (Beam)
• 14x 1/4" x 21/2" Strong-Drive SDS Heavy-Duty Connector Screws (Post)

Installation Notes

• Fasten with the included 1/4" x 21/2" Strong-Drive SDS Heavy-Duty Connector screws
• Use diamond holes for temporary positioning prior to final fastening
• Certified welds ensure consistent performance under rated load conditions

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

Frequently Asked Questions

What beam and post sizes is the ECCQ84SDS2.5 designed to fit?

This end column cap is designed for use with 8x beams and 4x post ends. The beam width dimension is 71/2 inches, W1 is 71/2 inches, and W2 is 3-5/8 inches, confirming compatibility with standard dimensional lumber in those sizes.

What fasteners are included, and why are they preferred over standard bolts?

The ECCQ84SDS2.5 includes Strong-Drive SDS Heavy-Duty Connector screws. These screws are preferred over standard through bolts because they provide a lower profile installation and attach to a greater net section area of the column, resulting in strong, reliable connections without the bulk of traditional bolt hardware.

What is the overall size of this column cap?

The ECCQ84SDS2.5 measures 81/2 inches in length (L) and 7 inches in height (H), with a beam width (W1) of 71/2 inches and a W2 dimension of 3-5/8 inches. It is constructed from heavy 3-gauge steel with a Simpson Strong-Tie Gray paint finish.

Is this connector suitable for high-wind or seismic conditions?

Yes. The ECCQ84SDS2.5 features increased uplift load values specifically designed to meet the demands of earthquake and wind loading, making it appropriate for construction in regions subject to those structural requirements.