The Simpson ECCQ64SS-SDS2.5 6x Beam 4x Post End Column Cap is a heavy-duty stainless steel connector built for end-of-beam column-to-beam connections in wood construction. Engineered by Simpson for applications where a 6x beam meets a 4x post at an end condition, this column cap features an extended bearing seat that projects beyond the side of the column, distributing load across a greater surface area for a stronger, more reliable structural connection. Fabricated from 7-gauge stainless steel, it is well-suited for outdoor, exposed, and high-demand environments where long-term corrosion resistance is essential - including post-and-beam framing in high-wind and seismic zones.

Key Features

• 7-Gauge Stainless Steel Construction - Provides exceptional corrosion resistance for outdoor structures, coastal environments, and any application where long-term durability of the connector is a priority.
• Extended Bearing Seat Design - Projects beyond the side of the column to increase the bearing surface area between beam and cap, delivering a stronger load transfer and a more reliable connection at end-of-beam conditions.
• Sized for 6x Beam and 4x Post - Engineered specifically for this lumber combination, ensuring a precise, code-consistent fit without field modification in end column applications.
• Includes Strong-Drive SDS Heavy-Duty Connector Screws - Comes complete with 1/4" x 2-1/2" Strong-Drive SDS screws for both the beam and post connections, enabling fast, code-compliant installation without sourcing additional fasteners separately.
• Approved for High-Wind and Seismic Applications - Rated for structural connections requiring increased uplift load capacity, making it a dependable choice for demanding project specifications and engineered designs.
• Made in the United States - Produced domestically to consistent quality standards expected for structural connectors in wood frame construction.

Why This Product

• Purpose-Built for End-of-Beam Column Connections - Unlike general-purpose hardware, this connector is specifically engineered for the end condition where a 6x beam meets a 4x post, eliminating guesswork and reducing the risk of misapplication on the job site.
• Stainless Steel for Environments Where It Matters Most - The full stainless steel construction makes this cap the right choice for exposed decks, pergolas, covered outdoor structures, and other applications where a standard galvanized connector may not provide adequate long-term protection.
• Everything Needed for Installation Is Included - With 14 Strong-Drive SDS screws for the beam and 14 for the post included in the package, contractors and builders can go straight to installation without a separate fastener order.
• Engineered for High-Load and Code-Sensitive Projects - Approved for use in high-wind and seismic zones and for structural connections requiring enhanced corrosion resistance, this column cap supports projects where meeting load and code requirements is non-negotiable.

Specifications

• Model Number: ECCQ64SS-SDS2.5
• Application: 6x Beam, 4x Post End Column Cap
• Beam Width (in.): 5-1/4, 5-1/2
• Dimension W1 (in.): 5-1/2
• Dimension W2 (in.): 3-5/8
• Dimension L (in.): 8-1/2
• Dimension H (in.): 7
• Material: 7-Gauge Stainless Steel
• Finish: Stainless Steel
• Fastener Type Included: 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector Screws
• Screws Included - Beam: 14
• Screws Included - Post: 14
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections in wood construction
• Structural connections requiring enhanced corrosion resistance (stainless steel finish)
• Applications in high-wind or seismic zones where increased uplift load capacity is required
• Outdoor and exposed structures where long-term durability of the connector is essential
• Post-and-beam framing where a 6x beam meets a 4x post at an end condition

What's Included

• 1x ECCQ64SS-SDS2.5 End Column Cap (7-gauge Stainless Steel)
• 14x 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector Screws (Beam)
• 14x 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector Screws (Post)

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What beam and post sizes is this column cap designed for?

The ECCQ64SS-SDS2.5 is engineered specifically for a 6x beam and a 4x post, making it suitable for end-of-beam column connections in wood construction where those lumber dimensions are used.

What fasteners are included, and why are they preferred over standard bolts?

This column cap comes complete with 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector screws. These screws offer faster installation than standard through bolts, attach to a greater net section area of the column, and provide a lower profile that reduces interference with finish materials.

Is this column cap suitable for outdoor or corrosive environments?

Yes. The ECCQ64SS-SDS2.5 is fabricated from 7-gauge stainless steel with a stainless steel finish, making it well-suited for demanding environments where corrosion resistance is critical, such as coastal or high-moisture applications.

Does this connector provide any enhanced performance for wind or seismic conditions?

Yes. The ECCQ64SS-SDS2.5 features enhanced uplift capacity specifically designed to address earthquake and wind loading demands, in addition to certified welds that deliver confidence in overall strength and load performance.