The Simpson ECCQ5-6SS-SDS2.5 Stainless Post End Column Cap is a heavy-duty structural connector from Simpson engineered for end-of-beam column-to-beam connections in wood construction. Designed to accept a 5-1/8 in. beam and pair with a 6x post, this connector is built from 3-gauge stainless steel with a matching stainless steel finish, making it a reliable choice for demanding structural applications where long-term corrosion resistance is a priority.

Key Features

• Extended bearing seat beyond the column face - provides additional surface area of bearing that helps distribute beam loads more effectively, adding greater support to the overall connection
• Strong-Drive SDS Heavy-Duty Connector screws included - deliver a lower profile than standard through bolts and attach to a greater net section area of the column, resulting in a stronger and cleaner installation without the bulk of traditional bolt hardware
• Certified welds throughout the connector - give builders and engineers added confidence in the strength and load capacity of every connection
• Increased uplift load capacity - engineered to handle elevated uplift demands, making this column cap well suited for seismic and high-wind construction zones
• 3-gauge stainless steel construction with stainless steel finish - resists corrosion in harsh or exposed environments, supporting a long service life without degradation of structural integrity

Why This Product

• Purpose-built for end-of-beam applications - the ECCQ series is specifically configured for post end column connections, giving structural professionals a connector that addresses the unique load transfer demands at beam termination points rather than relying on a generic bracket
• All fasteners included and matched to the connector - the package ships with the exact Strong-Drive SDS screws required for both the beam and post attachments, so installers have everything on hand to complete a code-ready connection without sourcing additional hardware separately
• Stainless steel material suits corrosive and high-exposure environments - for projects near coastal areas, wet conditions, or anywhere elevated corrosion resistance is specified, the all-stainless construction offers durability that galvanized alternatives may not match over the long term
• Domestically produced by a trusted structural connector brand - manufactured in the United States by Simpson, a name widely recognized in engineered wood construction, this connector supports projects where verified quality and consistent manufacturing standards are essential

Specifications

• Model No.: ECCQ5-6SS-SDS2.5
• Beam Width: 5-1/8 in.
• Dimension W1: 5-1/4 in.
• Dimension W2: 5-1/2 in.
• Dimension L: 8-1/2 in.
• Dimension H: 7 in.
• Material: 3 gauge Stainless Steel
• Finish: Stainless Steel
• Country of Origin: United States

What's Included

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

Options

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

Frequently Asked Questions

What type of fasteners are used with the ECCQ5-6SS-SDS2.5?

This column cap is installed using 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector screws, which are included with the connector. A total of 28 screws are provided - 14 for the beam and 14 for the post.

Why are SDS screws preferred over standard through bolts for this connector?

The Strong-Drive SDS screws provide a lower profile than standard through bolts and attach to a greater net section area of the column than a bolt attachment normally entails, which contributes to a stronger and cleaner connection.

What is the purpose of the extended bearing surface on the ECCQ column cap?

The seat of the column cap extends beyond the side of the column to provide an additional surface area of bearing. This extended bearing surface helps distribute the load from the beam and provides greater support for the overall connection.

Is this column cap suitable for use in high-wind or seismic applications?

Yes. Uplift loads on the ECCQ have been increased specifically to accommodate earthquake or wind loading conditions, making it appropriate for use in regions subject to these structural demands.

Note: Product dimensions and/or Screw or Bolt holes may differ from picture.