The Simpson Strong-Tie ECCQ66-SDS2.5HDG is a Hot-Dip Galvanized End Column Cap engineered to deliver a high-capacity connection for 6x beam and 6x post column-beam combinations in wood construction end-of-beam applications. The seat of the column cap provides an additional surface area of bearing that extends beyond the side of the column, helping distribute load from the beam and providing robust support for the connection. Fastened with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws (included), the ECCQ66-SDS2.5HDG delivers faster installation and attaches to a greater net section area of the column than standard bolt attachments. Manufactured from 7-gauge steel with a Hot-Dip Galvanized finish, this connector is built to the highest quality standards and engineered and tested to perform - the trusted choice of engineers and contractors.

Key Features

• Uses Simpson Strong-Tie Strong-Drive SDS screws to provide faster installation and provides a greater net section area of the column compared to bolts
• SDS screws provide for a lower profile compared to standard through bolts
• Nominal beam width: 6x
• Made from 7-gauge steel
• Hot-dip galvanization (HDG) offers extra corrosion resistance for exterior and treated-wood applications
• Certified welds for confidence in strength and loading
• Uplift loads have been increased for earthquake or wind loading
• Diamond holes for temporary fastening
• End column caps provide a high-capacity connection for column-beam combinations

Specifications

• Model Number (MPN): ECCQ66-SDS2.5HDG
• Member Size: 6x beam
• Nominal Beam Width: 6x
• Beam Width: 5-1/4 in., 5-1/2 in.
• Dimension W1: 5-1/2 in.
• Dimension W2: 5-1/2 in.
• Dimension L: 8-1/2 in.
• Dimension H: 7 in.
• Material: 7-Gauge Steel
• Gauge: 7
• Finish / Coating: Hot-Dip Galvanized (HDG)
• Country of Origin: United States

Approved Applications

• End-of-beam column-beam connections in wood construction
• High-capacity column-beam combinations requiring strong uplift resistance for earthquake or wind loading
• Exterior applications requiring corrosion resistance
• Pressure-treated wood applications where enhanced corrosion resistance is needed
• Residential and commercial structural framing projects requiring code-compliant connectors

What's Included

• 1x Simpson Strong-Tie ECCQ66-SDS2.5HDG End Column Cap
• Includes 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws - Beam (14), Post (14)

Installation

Install with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws (included). SDS screws provide faster installation and attach to a greater net section area of the column compared to standard through bolts, while also delivering a lower-profile finished connection.

Options

• Contact us for Configurable Options and Special orders
  

Frequently Asked Questions

What beam and post sizes is the ECCQ66-SDS2.5HDG designed to fit?

This end column cap is designed for use with a 6x beam and a 6x post, making it specifically suited for 6x column-beam combinations in wood construction end-of-beam applications.

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

The ECCQ66-SDS2.5HDG is installed with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws, which are included with the connector. These SDS screws allow for faster installation, attach to a greater net section area of the column compared to standard bolts, and provide a lower profile than standard through bolts.

Why is the Hot-Dip Galvanized finish important for this connector?

The Hot-Dip Galvanized (HDG) coating provides extra corrosion resistance, making this connector well suited for exterior applications and use with treated wood, where standard coatings may not offer adequate protection against moisture and chemical exposure.

What material and gauge is this end column cap made from?

The ECCQ66-SDS2.5HDG is manufactured from 7-gauge steel, providing a strong and durable construction that delivers a high-capacity connection for column-beam combinations.