The Simpson End Column Cap for 4x Beam, H1=6.5, Legs Omitted is a precision-engineered structural connector from Simpson, designed specifically for end-of-beam column-to-beam connections on top of steel members. Built without legs, this end cap is intended for field-welded attachment directly to steel columns and beams, including pipe and other column types where welding is performed by the designer. The extended seat geometry provides additional bearing surface beyond one side of the column, distributing beam loads effectively and reinforcing connection integrity in demanding structural environments.

Key Features

• Legless design for field-welded attachment - eliminates the need for pre-fabricated leg connections, giving structural designers full control over weld placement on steel columns, beams, and pipe columns
• Extended seat bearing surface - projects beyond one side of the column to distribute beam loads across a greater area, improving load transfer and connection reliability in end-of-beam applications
• 7-gauge steel construction - delivers the material thickness needed to handle increased uplift loads from earthquake or wind loading, making this cap suitable for code-demanding structural projects
• Simpson Strong-Tie Gray Paint finish - provides a consistent, professional appearance and surface protection appropriate for structural steel environments
• NDS code-compliant bolt hole requirements supported - bolt hole sizing and spacing conform to 2018 NDS standards, helping contractors and engineers meet code without additional field modification
• Made in the United States - domestic production supports consistent quality control and reliable availability for professional construction projects

Why This Product

• Purpose-built for end-of-beam structural connections - the legless, field-weld configuration is engineered specifically for end-of-beam applications on steel members, making it a direct fit for projects where standard column caps with legs are not appropriate
• Handles high-demand load conditions - the heavy-gauge steel construction is rated for applications subject to increased uplift from seismic and wind loading, giving engineers a reliable option for code-critical connections
• Flexible column compatibility - the cap can be field-welded to steel columns, beams, pipe columns, and other column types as specified by the designer, reducing the need to source multiple connectors for varied site conditions
• Backed by a recognized structural connector brand - Simpson is a well-established name in engineered structural connectors, and this cap carries the design consistency and documentation support that engineers and inspectors expect on commercial and residential framing projects

Specifications

• Model Number: ECCO4/6
• Manufacturer Part Number (MPN): ECCO4/6
• Beam Width: 3-1/2 in.
• Dimension W1: 3-5/8 in.
• Dimension L: 8-1/2 in.
• Dimension H1: 6-1/2 in.
• Material: 7-Gauge Steel
• Finish: Simpson Strong-Tie Gray Paint
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections on top of steel members
• Field-welded structural connections to steel columns and beams
• Field welding to pipe or other columns (weld by designer)
• Structural connections subject to increased uplift loads from earthquake or wind loading
• Applications requiring NDS code-compliant bolt spacing

Installation Notes

• Use all specified fasteners.
• Bolt holes shall be a minimum of 1/32" to a maximum of 1/16" 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 to engineered wood products.

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.

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

Frequently Asked Questions

What beam width is the ECCO4/6 designed to accommodate?

The ECCO4/6 is designed for a beam width of 3-1/2 in., with a W1 dimension of 3-5/8 in. and an overall length of 8-1/2 in., making it compatible with standard 4x lumber used in structural beam applications.

How is the ECCO4/6 attached to steel columns and beams?

The ECCO4/6 features a legless design that enables field-welded attachment directly to steel columns and beams. Diamond holes are also included to provide temporary fastening capability during installation before final welding is completed.

What makes the ECCO4/6 suitable for end-of-beam applications?

The ECCO4/6 includes an extended seat that provides additional bearing surface area beyond one side of the column, which improves load distribution and reinforces connection integrity specifically in end-of-beam positions on top of steel members.

What material and finish does the ECCO4/6 use?

The ECCO4/6 is constructed from heavy-duty 7-gauge steel and finished with Simpson Strong-Tie Gray paint, providing exceptional structural strength along with added protection in demanding environments.