The Simpson ECCQ77SDS2.5 Post End Column Cap is a heavy-duty structural connector from Simpson engineered for end-of-beam column-to-beam connections in wood construction. Built to accommodate a 6-3/4 in. wide beam and a 6-3/4 in. post, this end column cap is suited for heavy timber framing applications where a secure, low-profile fastener connection is needed in place of traditional through bolts. Designed to support enhanced uplift resistance under seismic and wind loading conditions, it arrives ready to install with all required Strong-Drive SDS Heavy-Duty Connector screws included.

Key Features

• Extended seat bearing surface - distributes beam loads more effectively across the connection, reducing stress concentrations at the column-to-beam interface in heavy timber applications.
• 3-gauge steel construction with Simpson Strong-Tie Gray paint finish - provides robust structural integrity and corrosion resistance suited to demanding wood construction environments.
• Includes 28 Strong-Drive SDS Heavy-Duty Connector screws (14 beam, 14 post) - eliminates the need to source separate fasteners, allowing for faster, job-ready installation on site.
• SDS screw attachment engages greater net section area of the column - compared to standard through-bolt connections, this approach preserves more of the wood member's structural capacity.
• Diamond holes for temporary fastening during positioning - simplifies alignment before final installation, reducing the chance of mis-drilled or misaligned connections.
• Approved for seismic and high-wind uplift applications - gives builders and engineers confidence when specifying connections in regions subject to lateral and uplift loading demands.

Why This Product

• Everything needed arrives in one package - the included Strong-Drive SDS screws for both the beam and post connections mean fewer trips to the supply house and a cleaner, more organized installation process.
• Low-profile SDS fastening preferred over through bolts - this connector is specifically approved for applications where a recessed, flush fastener profile is required or preferred, giving design professionals a code-friendly alternative in exposed timber settings.
• Purpose-built for heavy timber sizing - with dimensions matched to 6-3/4 in. beam and post members, this end column cap fits the specific member sizes common in timber frame and heavy structural wood construction without field modification.
• Dual-rated for wind and seismic uplift resistance - the connector's approved applications include both earthquake and wind loading scenarios, making it a versatile choice for contractors working across multiple structural load categories.

Specifications

• Model Number: ECCQ77SDS2.5
• Beam Width: 6-3/4 in.
• Width 2: 6-7/8 in.
• Width 1: 6-7/8 in.
• Height: 7 in.
• Length: 8-1/2 in.
• Dimension W1: 6-7/8 in.
• Dimension W2: 6-7/8 in.
• Dimension L: 8-1/2 in.
• Dimension H: 7 in.
• Material: 3-Gauge Steel
• Finish: Simpson Strong-Tie Gray Paint
• SDS Screws Included - Beam: 14 screws (1/4" x 2-1/2")
• SDS Screws Included - Post: 14 screws (1/4" x 2-1/2")
• 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 fastener connection is preferred over standard through bolts

What's Included

• 1x ECCQ77SDS2.5 End Column Cap
• 14x 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector Screws (Beam)
• 14x 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector Screws (Post)

Installation

Fasten with the included 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector screws. Use the diamond holes for temporary fastening during positioning before final installation.

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

Frequently Asked Questions

What beam and post sizes is the ECCQ77SDS2.5 designed to fit?

The ECCQ77SDS2.5 is designed for use with a 6-3/4 in. wide beam and a 6-3/4 in. post, making it suitable for heavy timber construction applications where those member sizes are specified.

What fasteners are included, and what type are they?

The ECCQ77SDS2.5 comes supplied with 28 Strong-Drive SDS Heavy-Duty Connector screws sized 1/4 in. x 2-1/2 in. These screws provide a lower profile than standard through bolts and engage a greater net section area of the column compared to traditional bolt attachments.

What material and finish is this column cap made from?

The ECCQ77SDS2.5 is constructed from 3-gauge steel and features a Simpson Strong-Tie Gray paint finish, providing a durable surface for use in wood construction applications.

What are the overall dimensions of the ECCQ77SDS2.5?

The column cap measures 6-7/8 in. for both W1 and W2, 8-1/2 in. in length (L), and 7 in. in height (H), accommodating the specified 6-3/4 in. beam and post connection at end-of-beam locations.