The Simpson ECC77 End Column Cap is an engineered steel connector built for end-of-beam column-to-beam connections in wood construction. Designed to fit a 6-3/4 in. beam width and a 6-3/4 in. post width, this end column cap extends bearing surface area beyond one side of the column, effectively distributing load from the beam to the post at the connection point. Whether you are working on a deck, pergola, or larger structural framing project, the ECC77 delivers reliable performance where beam-end support and uplift resistance are critical requirements.

Key Features

• Certified welds - provide verified strength at every connection point, giving builders confidence in structural integrity under load
• Enhanced uplift resistance - increased uplift load capacity helps the connector hold up under earthquake or high-wind loading conditions, adding a critical layer of safety
• NDS code-compliant bolt spacing - meets National Design Specification requirements out of the box, reducing the need for field calculations and keeping inspections on track
• Heavy-duty 3 gauge steel construction - the thick steel profile handles demanding structural loads without compromise, suited for larger engineered or dimensional lumber members
• Simpson Strong-Tie gray paint finish - provides a corrosion-resistant coating that extends the service life of the connector in typical structural environments
• Made in the United States - domestic production supports consistent quality control and material traceability on every unit

Why This Product

• Purpose-built for end-of-beam applications - the ECC77 is specifically engineered for end-column connections where a standard post cap would fall short, making it the right tool for framing scenarios that demand reliable load transfer at beam termination points
• Sized for larger structural members - with both a 6-3/4 in. beam width and 6-3/4 in. post width rating, this connector accommodates the heavier engineered lumber and larger dimensional stock commonly used in commercial, agricultural, and heavy residential framing
• Earthquake and wind load ready - the increased uplift load capacity built into the ECC77 makes it a strong choice for projects in high-wind zones or seismic regions where standard connectors may not meet design requirements
• Straightforward code compliance - bolt spacing that meets NDS requirements means less time verifying field dimensions and more confidence that the connection detail will pass structural review

Specifications

• Model Number: ECC77
• Description: 6-3/4" Beam, 6-3/4" Post End Column Cap
• Beam Width: 6-3/4"
• Length: 10-1/2 in.
• Width 1: 6-7/8 in.
• Width 2: 6-7/8 in.
• Height 1: 8 in.
• Post Width: 6-3/4"
• Material: 3 gauge steel
• Finish: Simpson Strong-Tie gray paint
• Required Fasteners: 3/4" Machine Bolts - Beam (2), Post (2)
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Structural connections requiring load distribution from beam to post
• Applications requiring enhanced uplift resistance for earthquake or wind loading conditions
• Projects requiring NDS code-compliant bolt spacing at column-beam connections

What's Included

• 1x Simpson Strong-Tie ECC77 End Column Cap
• Note: 3/4" Machine Bolts are required for installation (Beam: 2, Post: 2) and are 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.)

Note: Product dimensions may differ from picture.

Frequently Asked Questions

What beam and post sizes is the ECC77 designed to fit?

The ECC77 is designed for use with a 6-3/4" beam width and a 6-3/4" post width, making it suitable for structural connections involving larger engineered or dimensional lumber members of those dimensions.

What fasteners are required to install the ECC77?

Installation of the ECC77 requires 3/4" machine bolts - two for the beam connection and two for the post connection - for a total of four bolts. The bolt spacing is designed to meet NDS code requirements for optimal performance.

What is the ECC77 made of, and how is it finished?

The ECC77 is constructed from heavy-duty 3 gauge steel and features a Simpson Strong-Tie gray paint finish, which provides corrosion resistance and long-lasting durability in structural applications.

What makes the ECC77 an "end" column cap, and where is it intended to be used?

The ECC77 is an end column cap because its seat extends the bearing surface beyond one side of the column rather than centered over it, making it specifically designed for end-of-beam applications where a standard centered column cap would not be appropriate. It is approved for column-to-beam connections in wood construction at the end of a beam run.