The Simpson ECCQ46-SDS2.5HDG ECCQ HDG End Column Cap is a Simpson engineered connector built to deliver strong, reliable column-beam connections in end-of-beam applications for wood construction. The cap's seat extends beyond the side of the column to provide an additional bearing surface, helping distribute structural loads efficiently across the connection. Fabricated from 7-gauge steel with a hot-dip galvanized finish, this end column cap is well suited for exterior environments and treated-wood applications where long-term corrosion resistance is essential. Each cap ships with 28 Strong-Drive SDS Heavy-Duty Connector screws included, so the connection is ready to assemble right out of the package.

Key Features

• Strong-Drive SDS screws included - eliminates a separate fastener purchase and allows attachment to a greater net section area of the column than a standard bolt connection, improving overall connection strength
• Lower-profile SDS screw attachment - keeps the finished connection cleaner and less obtrusive than standard through bolts, which matters on exposed structural elements
• Certified welds - provides verified confidence in the strength and load capacity of the connection, supporting code-compliance requirements
• Increased uplift load ratings - engineered to handle the elevated demands of earthquake or wind loading, making this cap appropriate for high-load structural applications
• Extended bearing seat - the seat surface reaches beyond the column edge to distribute beam loads more effectively, reducing point-load stress on the connection
• Diamond holes for temporary fastening - lets installers hold the cap in position during assembly before final fastening, speeding up the installation process
• Hot-dip galvanized finish - delivers extra corrosion resistance specifically suited for exterior installations and connections involving pressure-treated lumber, where moisture and chemical exposure are ongoing concerns
• Fits 4x beam and 6x post - sized precisely for this common framing combination, eliminating the need for additional brackets or braces at the connection point

Why This Product

• A complete connection kit in one package - the cap and all 28 required Strong-Drive SDS screws are included together, so there are no missing fasteners to track down before work can begin on the post-to-beam connection
• Built for demanding load conditions - certified welds and uplift load ratings designed for earthquake and wind scenarios mean this connector is engineered beyond basic structural minimums, offering real confidence on critical framing connections
• Proven corrosion resistance for real-world exterior use - the hot-dip galvanized coating is specifically intended for treated-wood and outdoor environments, where standard coatings often fall short over time
• Engineered load distribution at the end of the beam - the extended bearing seat works where standard column caps may not, making this the purpose-built solution for end-of-beam structural connections in wood framing

Specifications

• Model Number: ECCQ46-SDS2.5HDG
• Brand: Simpson Strong-Tie
• Member Size: 4x beam, 6x post
• Material: 7-gauge steel
• Coating / Finish: Hot-Dip Galvanized
• Country of Origin: United States
• Installation Fasteners: Install with (28) 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws (Model: SDS25212 included)

What's Included

Each pack contains (1) ECCQ46-SDS2.5HDG Beam, 6x Post End Column Cap, (28) 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws.

Options

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

Downloads and Resources

• View Specifications

Frequently Asked Questions

What makes the ECCQ46-SDS2.5HDG suitable for exterior and treated-wood applications?

This column cap features a hot-dip galvanized (HDG) finish, which offers extra corrosion resistance specifically designed for exterior environments and applications involving treated wood, where standard finishes may deteriorate over time.

Why are Strong-Drive SDS screws used instead of standard through bolts?

The Strong-Drive SDS Heavy-Duty Connector screws provide a lower profile than standard through bolts and allow attachment to a greater net section area of the column, resulting in a faster installation process and a strong, reliable connection.

How does the ECCQ column cap help distribute structural loads?

The seat of the column cap provides an additional surface area of bearing that extends beyond the side of the column. This extended bearing surface helps distribute the load from the beam and provide support for the connection, making it well suited for end-of-beam applications in wood construction.

Is this column cap engineered for areas prone to earthquakes or high winds?

Yes. The ECCQ46-SDS2.5HDG features uplift loads that have been increased for earthquake or wind loading, and certified welds provide confidence in strength and loading performance under these demanding conditions.

Note: Product dimensions and/or screw or bolt holes may differ from picture.