The Simpson Strong-Tie ECCQ3-4SDS2.5 End Column Cap is engineered to deliver high-capacity column-beam connections in end-of-beam applications for wood construction. Designed for use with a 3-1/8 in. beam and a 4x post, this heavy-duty connector features a seat that extends beyond the side of the column, providing additional bearing surface area to help distribute load from the beam and reinforce the overall connection. Built from 7-gauge steel and finished in Simpson Strong-Tie gray paint, the ECCQ3-4SDS2.5 is manufactured to the highest quality standards and is the trusted choice of engineers and contractors for projects requiring both strength and code compliance.

Key Features

• Uses Simpson Strong-Tie Strong-Drive SDS screws for faster installation and provides a greater net section area of the column compared to bolts
• SDS screws provide a lower profile compared to standard through bolts
• Designed for a 3-1/8 in. beam width with a 4x post configuration
• Manufactured from 7-gauge steel for superior strength and durability
• Finished in Simpson Strong-Tie gray paint for a clean, professional appearance
• The extended seat bearing surface helps distribute load from the beam and supports the connection
• Certified welds for confidence in strength and loading
• Uplift loads increased for earthquake or wind loading applications
• Diamond holes for convenient temporary fastening during installation

Specifications

• Model Number: ECCQ3-4SDS2.5
• Beam Width: 3-1/8 in.
• Post Size: 4x
• Material: 7-Gauge Steel
• Finish / Coating: Simpson Strong-Tie Gray Paint
• Install With: 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector Screws (included)

Approved Applications

• End-of-beam column-beam connections in wood construction
• High-capacity structural connections requiring a low-profile fastener solution
• Projects requiring compliance with building codes for seismic or wind uplift loading
• Applications where greater net section area of the column is required compared to standard bolt connections

What's Included

• 1 x Simpson Strong-Tie ECCQ3-4SDS2.5 End Column Cap
• 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector Screws (included with the column cap)

Installation

Fasten with the included 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws. The SDS screws drive quickly for efficient installation and attach to a greater net section area of the column than standard bolt attachment, while maintaining a lower profile for a cleaner finished look.

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 ECCQ3-4SDS2.5 designed to work with?

This end column cap is specifically designed for use with a 3-1/8 in. wide beam and a 4x post configuration, making it suited for engineered lumber or glulam beam applications in wood construction.

What fasteners are used to install this end column cap, and are they included?

The ECCQ3-4SDS2.5 installs with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws, which are included with the connector. These screws provide faster installation and a lower profile compared to standard through bolts, while also offering a greater net section area of the column.

What material and finish is the ECCQ3-4SDS2.5 made from?

This end column cap is manufactured from 7-gauge steel and finished in Simpson Strong-Tie gray paint, providing both structural strength and a clean, professional appearance suitable for exposed applications.

What advantages does this connector offer over a standard column cap that uses through bolts?

The ECCQ3-4SDS2.5 uses Strong-Drive SDS screws instead of standard through bolts, which results in a lower-profile connection and preserves a greater net section area of the column. Additionally, the extended seat bearing surface helps distribute load from the beam, and the design supports increased uplift loads for earthquake or wind loading applications.