The Simpson ECC64HDG HDG End Column Cap is a hot-dip galvanized structural connector from Simpson engineered for end-of-beam column-to-beam connections in wood construction. Built to join a 6x beam with a 4x post, this heavy-duty cap features a seat design that extends beyond one side of the column to provide additional bearing surface area, helping to distribute load and deliver stable, code-compliant support at end-of-beam positions. With a hot-dip galvanized finish and 7-gauge steel construction, this end column cap is well suited for structural applications where both load performance and long-term corrosion resistance are essential.

Key Features

• Hot-dip galvanized finish on 7-gauge steel - provides a thick, durable corrosion-resistant coating that holds up in outdoor, exposed, and moisture-prone environments without sacrificing structural integrity.
• Certified welds - give buyers confidence in the connector's strength and load capacity, supporting safe, reliable column-to-beam connections.
• Enhanced uplift load capacity - increased uplift ratings make this cap a strong choice for structures in earthquake or high-wind regions where additional resistance to lifting forces is required.
• NDS code-compliant bolt spacing - ensures the connector meets recognized design standards, simplifying the approval and inspection process on residential and commercial projects.
• Extended seat bearing surface - the seat projects beyond one side of the post to increase the contact area under the beam, improving load transfer and connection stability at end-of-beam positions.
• Designed specifically for 6x beam and 4x post pairings - the purpose-matched sizing eliminates guesswork and helps ensure a proper, secure fit without field modification.

Why This Product

• Purpose-built for end-of-beam applications - unlike general-purpose column caps, this connector is specifically engineered for end-of-beam column-to-beam connections, meaning the geometry and load path are optimized for exactly this structural scenario.
• Corrosion resistance built into the base material - the hot-dip galvanized finish goes beyond a surface coating, making this cap a practical long-term choice for covered outdoor structures, pergolas, decks, and other exposed wood framing where hardware degradation is a real concern.
• Engineered for seismic and wind uplift demands - with uplift loads increased for earthquake or wind loading, this connector supports performance requirements in high-load climatic or seismic zones, reducing the need to specify a heavier or more complex connector.
• American-made quality from a trusted structural brand - produced by Simpson with certified welds and NDS-compliant bolt spacing, this cap reflects consistent manufacturing standards that builders, engineers, and inspectors can rely on.

Specifications

• Model Number: ECC64HDG
• Description: 6X Beam, 4X Post HDG End Column Cap
• Material: 7 Gauge Steel
• Finish: Hot-Dip Galvanized (HDG)
• Fasteners Required: 5/8" Machine Bolts - Beam (2), Post (2)
• Width 1: 5-1/2 in.
• Width 2: 3-5/8 in.
• Length: 7-1/2 in.
• Height 1: 6-1/2 in.
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Structural connections requiring enhanced uplift resistance for earthquake or wind loading
• Applications requiring NDS code-compliant bolt spacing
• Outdoor or exposed environments requiring corrosion-resistant hardware

What's Included

• 1x Simpson Strong-Tie ECC64HDG End Column Cap
• Fasteners not included - requires 5/8" Machine Bolts: Beam (2), Post (2)

• 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.)

Note: Product dimensions may differ from picture.

Frequently Asked Questions

What beam and post sizes is the ECC64HDG designed to fit?

The ECC64HDG is designed for use with a 6X beam and a 4X post, making it specifically suited for end-of-beam column-to-beam connections in wood construction.

What fasteners are required to install the ECC64HDG?

Installation requires 5/8" machine bolts - two for the beam and two for the post. The bolt spacing is designed to meet NDS code requirements for optimal performance.

What material and finish does the ECC64HDG use, and why does it matter?

The ECC64HDG is constructed from 7-gauge steel with a hot-dip galvanized finish. This finish provides enhanced corrosion resistance, making the connector well suited for demanding structural environments where exposure to moisture or other corrosive conditions is a concern.

What is the purpose of the seat design on the ECC64HDG?

The seat on the ECC64HDG extends beyond one side of the column to provide additional bearing surface area. This design helps distribute load from the beam and provides firm, stable support for the connection, which is especially important in end-of-beam applications.