The Simpson 5-1/8 in. Beam Column Cap HDG Quick-Install SDS Screws is a hot-dip galvanized column cap engineered for secure column-to-beam connections on top of steel columns and posts. Built around a no-leg design, this cap is purpose-made for field-welded attachment directly to steel columns, making it a reliable choice for structural framing applications where load distribution from beam to column is critical. It ships complete with Strong-Drive SDS Heavy-Duty Connector screws, enabling fast, high-performance installation right out of the box.

Key Features

• No-leg design - allows direct field-welded attachment to steel columns and posts, eliminating the need for additional hardware and simplifying on-site assembly.
• Extended seat beyond each side of the column - distributes beam loads across a greater bearing surface area, improving the integrity and efficiency of the connection.
• Hot-dip galvanized finish - provides robust corrosion resistance, making this cap well suited for outdoor, exposed, or high-moisture structural environments.
• Includes Strong-Drive SDS Heavy-Duty Connector screws - these fasteners attach to a greater net section area of the column than traditional through bolts, delivering superior structural engagement with faster installation.
• Made in the United States - produced domestically under Simpson quality standards, giving buyers confidence in consistent material and manufacturing quality.

Why This Product

• Field-weld ready without leg brackets - the no-leg configuration means structural crews can weld directly to steel columns on site, reducing prep steps and keeping the connection clean and compact.
• Screw-based fastening that outperforms bolted alternatives - the included SDS Heavy-Duty Connector screws engage more of the column's net section than standard bolts, resulting in a stronger, more efficient connection without the bulk of through-bolt hardware.
• Corrosion-resistant finish for demanding environments - the hot-dip galvanized coating is well suited for structural applications exposed to the elements, reducing long-term maintenance concerns in corrosion-prone conditions.
• Complete connection solution in one product - the cap and its matching SDS screws are packaged together, so installers have everything needed for a code-consistent column-to-beam connection without sourcing fasteners separately.

Specifications

• Model Number: CCOQ5-SDS2.5HDG
• Beam Width: 5-1/8 in.
• Length: 11 in.
• Height: 7 in.
• Material Gauge: 3 Gauge
• Finish: Hot-Dip Galvanized (HDG)
• Country of Origin: United States

Approved Applications

• Column-to-beam connections on top of steel columns and posts
• Field-welded attachments to steel columns where a no-leg cap design is required
• Structural framing applications requiring load distribution from beam to column
• Projects requiring hot-dip galvanized hardware for corrosion-exposed environments

What's Included

• (1) CCOQ5-SDS2.5HDG Hot-Dip Galvanized Beam Column Cap
• (16) 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector Screws

Options

• For end conditions, see ECCOQ.
• For rough-cut lumber sizes, provide dimensions.
• Other custom column caps are available. Contact us for Configurable Options and Special orders

Frequently Asked Questions

What type of fasteners are used with the CCOQ5-SDS2.5HDG?

The CCOQ5-SDS2.5HDG includes (16) 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector screws, which are specifically designed for fast installation and enhanced net section engagement.

Why are SDS screws used instead of standard bolts?

Strong-Drive SDS screws provide a lower profile than standard through bolts and attach to a greater net section area of the column, improving both the structural performance and the ease of installation.

What finish does this column cap have?

The CCOQ5-SDS2.5HDG features a hot-dip galvanized (HDG) finish, providing robust corrosion resistance suitable for demanding or exposed applications.

How does the seat design benefit the connection?

The seat of the column cap extends beyond each side of the column, providing additional bearing surface area that helps distribute the load from the beam and support the overall connection.

Related Products

• - End Column Caps for end-condition applications

Note: Product dimensions may differ from picture.