The Simpson 5-1/8 in. Beam 6X Post Black End Column Cap is a heavy-duty structural connector engineered for end-of-beam column-to-beam connections in wood construction. Built from 3-gauge steel with a black powder-coat finish, this end column cap features a seat that extends beyond one side of the column to provide additional bearing surface, effectively distributing load at the connection point. Whether the application involves seismic loading, high-wind zones, or timber-frame construction requiring a 5-1/8 in. beam paired with a 6X post, this connector is purpose-built to meet the structural demands of the job.

Key Features

• 3-gauge steel construction - delivers the heavy-duty strength needed for demanding structural column-to-beam connections in wood framing
• Black powder-coat finish - provides a clean, corrosion-resistant appearance suited for both exposed and concealed timber-frame applications
• Certified welds - give installers and inspectors confidence in connection integrity and load-carrying reliability
• Increased uplift load capacity - supports resistance to earthquake and wind loading, making this cap appropriate for seismic and high-wind structural applications
• NDS code-compliant bolt spacing - ensures the connection meets National Design Specification requirements, simplifying inspections and code approvals
• End column cap seat design - extends beyond one side of the column to increase bearing area and improve load distribution at end-of-beam positions

Why This Product

• Purpose-matched dimensions for timber framing - designed specifically for a 5-1/8 in. beam and 6X post combination, eliminating guesswork and ensuring a proper fit in heavy wood construction without modification
• Built-in seismic and wind resistance - the increased uplift load capacity makes this connector a practical choice for projects in earthquake-prone or high-wind regions where standard connections may fall short
• Code-ready by design - NDS-compliant bolt spacing and certified welds mean the connection is engineered to satisfy structural code requirements from the start, reducing on-site friction during inspection
• American-made quality from a trusted structural connector brand - Simpson produces this end column cap domestically, giving contractors and engineers confidence in consistent manufacturing standards for load-critical applications

Specifications

• Model Number: ECC5 1/4-6PC
• Description: 5-1/8" Beam, 6X Post Black End Column Cap
• Material: 3 Gauge Steel
• Finish: Black Powder-Coat
• Fasteners Required: 3/4" Machine Bolts - Beam (2), Post (2)
• Width 1: 5-1/4 in.
• Width 2: 5-1/2 in.
• Length: 10-1/2 in.
• Height 1: 8-1/8 in.
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Structural connections requiring increased uplift resistance for seismic (earthquake) loading
• Structural connections requiring increased uplift resistance for wind loading
• Applications requiring NDS code-compliant bolt spacing
• Projects requiring a 5-1/8" beam with a 6X post configuration

What's Included

• 1x ECC5 1/4-6PC Black End Column Cap
• Note: Fasteners (3/4" Machine Bolts) are required but 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 size is the ECC5 1/4-6PC designed for?

The ECC5 1/4-6PC is specifically designed for a 5-1/8" beam paired with a 6X post, making it suitable for timber-frame and heavy wood construction applications requiring that lumber dimension combination.

What fasteners are required to install this end column cap?

Installation requires 3/4" Machine Bolts - two (2) for the beam connection and two (2) for the post connection. Fasteners are not included with the cap and must be sourced separately.

Is the ECC5 1/4-6PC suitable for high-wind or seismic zones?

Yes. The ECC5 1/4-6PC features increased uplift load capacity specifically to accommodate earthquake and wind loading demands, making it appropriate for use in seismic and high-wind design applications.

Where is the ECC5 1/4-6PC manufactured?

This product is manufactured in the United States.

Note: Product dimensions may differ from picture.