The Simpson 6X Beam End Column Cap with HDG Legs Omitted is a heavy-duty structural connector engineered for end-of-beam column-to-beam connections atop steel members. Designed without legs for field-welded attachment directly to steel columns and beams, this cap delivers the load transfer and corrosion resistance required by demanding structural applications - including those subject to seismic or high-wind loading conditions. The extended seat provides additional bearing surface area beyond one side of the column, reinforcing connection integrity where it matters most.

Key Features

• Legless end cap design - enables direct field-welded attachment to steel columns and beams, giving designers and engineers precise control over connection placement without relying on pre-formed legs
• Extended seat configuration - projects bearing surface beyond one side of the column to distribute beam load more effectively, reducing stress concentration at the connection point
• Hot Dip Galvanized finish - provides robust corrosion resistance suited to exposed, exterior, and structurally demanding environments where long-term durability is critical
• 7-gauge steel construction - delivers the structural integrity required for high-uplift applications including seismic and high-wind load conditions
• Compatible with pipe columns and non-standard profiles - the field-weld design accommodates pipe columns and other non-standard column shapes, expanding applicability across a wide range of project types
• NDS code-compliant bolt hole sizing - supports engineered wood connections in accordance with 2018 NDS spacing requirements, simplifying compliance on code-governed projects

Why This Product

• Purpose-built for end-of-beam structural applications - the cap is specifically engineered for column-to-beam connections at beam ends atop steel members, making it a direct fit for a connection type that general-purpose hardware cannot reliably serve
• Field-weld flexibility for complex column profiles - because legs are omitted and attachment is handled by the designer through field welding, this connector adapts to pipe columns and other non-standard profiles that traditional column caps cannot accommodate
• Corrosion resistance backed by HDG finish - the Hot Dip Galvanized coating makes this connector a dependable choice for projects where exposure conditions or long-term performance requirements rule out lighter finishes
• Designed for high-demand load conditions - increased uplift resistance for seismic and high-wind loading is a listed approved application, making this cap a reliable choice when structural performance under lateral and uplift forces is a project requirement

Specifications

• Model Number: ECCO6HDG
• Beam Width: 5-1/4 in., 5-1/2 in.
• Dimension W1: 5-1/2 in.
• Dimension L: 7-1/2 in.
• Dimension H1: 6-1/2 in.
• Material: 7-Gauge Steel
• Finish: Hot Dip Galvanized (HDG)
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections atop steel members
• Structural connections requiring field-welded attachment to steel columns and beams
• Applications demanding increased uplift resistance for seismic (earthquake) or high-wind loading conditions
• Connections to pipe columns or other non-standard column profiles via field welding
• Projects requiring NDS code-compliant bolt spacing for engineered wood connections

Installation

• Use all specified fasteners as directed in manufacturer documentation.
• Bolt holes shall be a minimum of 1/32 in. to a maximum of 1/16 in. larger than the bolt diameter (per 2018 NDS, section 12.1.3.2); bolt holes should be drilled from one side all the way through the beam to maintain hole tolerances.
• Contact engineered wood manufacturers for connections involving engineered wood products.
• Weld attachment to steel columns or beams to be performed by designer.

Options

• Contact us for Configurable Options and Special orders
• For special, custom, or rough-cut lumber sizes, provide dimensions.
• ECCO may be ordered for field welding to pipe or other columns. Weld by designer.

Frequently Asked Questions

What beam widths is the ECCO6HDG designed to accommodate?

The ECCO6HDG is sized for beams measuring 5-1/4 in. to 5-1/2 in. wide, making it suitable for standard 6x lumber and similar engineered wood members within that width range.

How is the ECCO6HDG attached to the column and beam?

The ECCO6HDG features a legless design that is intended for field-welded attachment directly to steel columns and beams. Diamond holes are also provided for convenient temporary fastening during installation prior to final welding.

What finish does the ECCO6HDG have, and why does it matter?

The ECCO6HDG is finished with a Hot Dip Galvanized (HDG) coating, which provides exceptional corrosion resistance. This makes it well suited for exposed or demanding environments where standard finishes may not offer adequate protection.

What is the purpose of the extended seat on the ECCO6HDG?

The extended seat provides additional bearing surface area beyond one side of the column, which helps distribute load from the beam more effectively and reinforces the integrity of the connection in end-of-beam applications atop steel members.