The Simpson ECC84 End Column Cap is a heavy-duty connector engineered for end-of-beam column-to-beam connections in wood construction. Designed specifically to pair an 8x beam with a 4x post, this end column cap features a seat that extends bearing surface beyond one side of the column, helping to distribute load from the beam and deliver dependable structural support. Built from 3-gauge steel with a Simpson Strong-Tie gray paint finish and certified welds throughout, the ECC84 is a go-to hardware solution for structural connections where uplift resistance, bolt spacing compliance, and welded joint integrity are non-negotiable.

Key Features

• Certified welds - provide verified joint integrity, giving builders confidence in the strength and load capacity of every connection.
• Increased uplift load capacity - engineered to handle elevated uplift forces, making this column cap well-suited for structures in earthquake- or high-wind-prone regions.
• NDS code-compliant bolt spacing - bolt layout meets National Design Specification requirements, supporting smooth inspections and code-compliant builds.
• Extended bearing seat - the seat projects beyond one side of the post column, adding bearing surface area that helps distribute beam load more effectively across the connection.
• 3-gauge steel construction with Simpson Strong-Tie gray paint finish - heavy-gauge material and a durable factory finish work together to resist wear and maintain structural performance over time.
• Sized precisely for 8x beam and 4x post pairings - the ECC84 is purpose-built for these lumber dimensions, eliminating fit uncertainty and simplifying installation in qualifying wood framing applications.

Why This Product

• Purpose-built geometry for end-of-beam applications - unlike standard column caps, the ECC84's extended seat is specifically designed for end-of-beam positioning, providing reliable bearing and load transfer where a post meets the terminus of an 8x beam.
• Uplift-rated for demanding structural conditions - the increased uplift load capacity makes this connector a practical choice for projects where wind or seismic forces must be factored into the connection design.
• Backed by Simpson Strong-Tie engineering and certified welds - every ECC84 is manufactured in the United States with certified welds and a consistent gray paint finish, supporting traceable quality for structural hardware applications.
• Configurable for non-standard lumber - straps may be rotated 90 deg. and an optional W2 dimension can be specified for special or rough-cut lumber sizes, offering flexibility beyond standard nominal dimensions without compromising the connection design.

Specifications

• Model Number: ECC84
• Description: 8X Beam, 4X Post End Column Cap
• Material: 3 gauge steel
• Finish: Simpson Strong-Tie gray paint
• Fasteners Required - Beam: 3/4" Machine Bolts (2)
• Fasteners Required - Post: 3/4" Machine Bolts (2)
• Length: 10-1/2 in.
• Width 1: 7-1/2 in.
• Width 2: 3-5/8 in.
• Height 1: 8 in.
• Country of Origin: United States

Approved Applications

• End-of-beam column-beam connections in wood construction
• Structural connections requiring increased uplift load capacity for earthquake or wind loading
• Applications requiring NDS code-compliant bolt spacing
• Wood construction projects requiring certified welded column cap connections

What's Included

• 1x Simpson Strong-Tie ECC84 End Column Cap
• Note: Fasteners (3/4" Machine Bolts) are not included and must be sourced separately.

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 ECC84 designed for?

The ECC84 is designed specifically for use with 8x beams and 4x posts, making it suitable for end-of-beam column-beam connections in wood construction where those lumber dimensions are used.

What fasteners are required to install the ECC84?

Installation requires 3/4" machine bolts - two for securing the beam connection and two for securing the post connection.

What material and finish is the ECC84 made from?

The ECC84 is constructed from heavy-duty 3-gauge steel and features a Simpson Strong-Tie gray paint finish. It also includes certified welds for added confidence in strength and load performance.

Is the ECC84 suitable for use in areas prone to earthquakes or high winds?

Yes. The ECC84 features increased uplift load capacity, making it an appropriate choice for structural connections in applications where earthquake or wind loading is a concern.