The Simpson ECCQ HDG End Column Cap for 5-1/8 in. Beam and 4x Post with Strong-Drive SDS Screws is an engineered connector from Simpson designed to deliver a high-capacity connection for column-beam combinations in end-of-beam wood construction. Built from heavy 7-gauge steel and finished with a hot-dip galvanized coating, this end column cap is engineered to hold up in exterior environments and applications involving pressure-treated lumber where long-term corrosion resistance is critical. It ships complete with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws for both the beam and post connections, so the hardware needed for a complete installation is included right out of the box.

Key Features

• Strong-Drive SDS screw installation - SDS screws drive faster than traditional through bolts and preserve a greater net section area of the column, resulting in a stronger, cleaner connection with less labor.
• Low-profile fastening with SDS screws - Eliminating the need for protruding bolt heads and nuts keeps the connector profile compact, which simplifies finishing and reduces interference with adjacent framing members.
• Engineered for 5-1/8 in. beam width - Precisely sized to match glulam and engineered lumber beams at this dimension, ensuring a proper fit without field modification.
• 7-gauge steel construction - Heavy-gauge steel provides the structural strength needed for high-capacity column-to-beam connections in demanding load conditions, including those subject to uplift from wind or seismic forces.
• Hot-dip galvanized finish - The HDG coating delivers superior corrosion resistance compared to standard coatings, making this cap a reliable choice for exterior structural applications and connections involving pressure-treated wood.

Why This Product

• Everything you need is included - The package comes with the full complement of 1/4 in. x 2-1/2 in. Strong-Drive SDS screws for both the beam and post connections, so there is no need to source fasteners separately before starting the job.
• Built for exterior and treated-wood environments - Hot-dip galvanization provides a level of corrosion resistance specifically suited to the harsh conditions created by moisture exposure and the chemicals present in pressure-treated lumber, helping the connection maintain its integrity over time.
• Faster installation without sacrificing strength - SDS screw attachment replaces the need to drill through-bolt holes and install hardware on both sides of the column, cutting installation time while actually improving the net section area retained in the post.
• Engineered and tested to meet structural demands - As a Simpson connector manufactured to documented engineering standards, this cap is a recognized choice for structural applications requiring compliance with building codes, including connections subject to increased loads from earthquake or wind forces.

Specifications

• MPN: ECCQ5-4HDG-SDS
• Brand: Simpson Strong-Tie
• Member Size: 5-1/8 in. beam
• Post Size: 4x post
• Beam Width (W1): 5-1/4 in.
• Width 2 (W2): 3-5/8 in.
• Length (L): 8-1/2 in.
• Height (H): 7 in.
• Gauge: 7-gauge steel
• Coating / Finish: Hot-Dip Galvanized (HDG)
• SDS Screws Included: Beam (14), Post (14) - 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Exterior structural applications requiring corrosion-resistant hardware
• Connections involving pressure-treated wood where hot-dip galvanized corrosion resistance is required
• Structural applications subject to increased uplift loads from earthquake or wind forces

What's Included

• ECCQ5-4HDG-SDS End Column Cap (hot-dip galvanized)
• 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws - Beam (14) and Post (14)

Options

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

Frequently Asked Questions

What fasteners are used with the ECCQ5-4HDG-SDS, and are they included?

This end column cap is installed with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws, which are included with the product. The package includes 14 screws for the beam connection and 14 screws for the post connection.

Why are SDS screws used instead of standard through bolts?

Strong-Drive SDS screws provide faster installation than through bolts and engage a greater net section area of the column. They also result in a lower profile connection compared to standard through bolts, which can be an important consideration in finished structural applications.

Is this end column cap suitable for use with pressure-treated lumber or exterior applications?

Yes. The hot-dip galvanized (HDG) finish provides extra corrosion resistance specifically suited for exterior applications and use with pressure-treated wood, making it appropriate for outdoor structures and environments where moisture exposure is a concern.

What beam and post sizes is this end column cap designed for?

The ECCQ5-4HDG-SDS is engineered for use with a 5-1/8 in. wide beam and a 4x post. The connector dimensions are W1: 5-1/4 in., W2: 3-5/8 in., L: 8-1/2 in., and H: 7 in., fabricated from 7-gauge steel.

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