The Simpson ECC3 1/4-6 End Column Cap is engineered by Simpson to deliver strong, reliable column-to-beam connections in end-of-beam applications throughout wood construction. The seat of the column cap provides an additional surface area of bearing that extends beyond the one side of the column, helping to distribute load from the beam and provide dependable support at the connection point. Built from 7-gauge steel with certified welds and a durable Simpson Strong-Tie gray paint finish, this end column cap is a proven solution for post and beam assemblies where structural integrity, code compliance, and uplift resistance are critical requirements.

Key Features

• Certified welds - provide verified strength and load confidence, so you can trust the connection meets the demands of your structural application
• Increased uplift load capacity - designed to handle elevated uplift forces from earthquake or wind loading, making it well-suited for high-wind or seismic zone construction
• NDS code-compliant bolt spacing - meets National Design Specification requirements, helping ensure your installation passes inspection without costly corrections
• Diamond holes for temporary fastening - allow you to hold the cap in position during layout and alignment before final bolting, improving installation accuracy and efficiency
• Fits a 3-1/8 in. beam and nominal 6x post - precisely sized for engineered lumber and heavy timber framing at end column positions, reducing guesswork during selection
• 7-gauge steel construction - delivers the heavy-duty rigidity required for load-bearing column cap applications in demanding wood framing projects
• Simpson Strong-Tie gray paint finish - provides a protective coating that resists corrosion and integrates cleanly into finished structural assemblies

Why This Product

• Purpose-built for end-of-beam column connections - the extended bearing seat distributes beam loads beyond one side of the column, addressing a structural challenge that standard column caps are not optimized to handle
• Engineered for high-demand environments - with uplift loads increased for earthquake or wind loading and certified welds throughout, this cap is a dependable choice for structures in seismic or high-wind zones where connection performance cannot be compromised
• Code-ready out of the box - bolt spacing that meets NDS code requirements means less time verifying compliance details on the job site and more confidence during the inspection process
• Installer-friendly design - diamond holes for temporary fastening let you position and secure the cap before committing to final bolt placement, reducing the risk of misalignment during post and beam assembly

Specifications

• Model Number (MPN): ECC3 1/4-6
• Member Size: 3-1/8 in. beam, 6x post
• Beam Width: 3-1/8 in.
• Length: 7-1/2 in.
• Width 1: 3-1/4 in.
• Width 2: 5-1/2 in.
• Height 1: 6-1/2 in.
• Nominal Post Size: 6x
• Material / Gauge: 7-gauge steel
• Finish / Coating: Simpson Strong-Tie Gray Paint
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Post and beam framing assemblies requiring load distribution at end column positions
• Structures in high-wind or seismic zones requiring increased uplift load capacity
• Applications requiring NDS code-compliant bolt spacing for structural integrity

What's Included / Installation

• 1x Simpson ECC3 1/4-6 ECC End Column Cap
• Install with (4) 5/8 in. diameter machine bolts (fasteners not included)

Options

• Contact us for Configurable Options and Special orders
• Straps may be rotated 90 deg. (see SPECS)
• For special, custom or rough-cut lumber sizes, provide dimensions. An optional W2 dimension may be specified. (The W2 dimension on straps rotated 90 deg. is limited by the W1 dimension.)

Frequently Asked Questions

What beam and post sizes is the ECC3 1/4-6 designed to fit?

The ECC3 1/4-6 is designed for use with a 3-1/8 in. wide beam and a nominal 6x post, making it suitable for standard engineered lumber and timber framing applications at end-of-beam column positions.

What fasteners are required to install the ECC3 1/4-6?

Installation requires four 5/8 in. diameter machine bolts. The bolt spacing is designed to meet NDS code requirements to ensure optimal structural performance.

What material and finish is used on the ECC3 1/4-6?

The ECC3 1/4-6 is made from heavy-duty 7-gauge steel and features a Simpson Strong-Tie gray paint finish for durability in wood construction applications.

Is the ECC3 1/4-6 suitable for use in high-wind or seismic zones?

Yes, the ECC3 1/4-6 features uplift loads that have been increased to accommodate earthquake or wind loading, and it includes certified welds for added confidence in strength, making it appropriate for structures in high-wind or seismic zones.