The Simpson CCQ HDG Column Cap for 3-1/8 in. Beam and 6x Post by Simpson Strong-Tie is engineered to deliver high-capacity column-to-beam connections in wood construction. The extended bearing seat distributes load beyond each side of the column, providing reliable support at post-to-beam transitions in both structural and timber-frame applications. Thirty 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws are included, enabling fast installation while attaching to a greater net section area of the column than standard bolt attachments allow. Hot-dip galvanized 7-gauge steel construction makes this column cap a dependable choice for exterior decks, pergolas, covered structures, and any application involving treated lumber.

Key Features

• Strong-Drive SDS screws included - lower profile than standard through bolts means a cleaner finished appearance while achieving a stronger, faster connection to the column
• Extended bearing seat - distributes the load from the beam beyond each side of the column, reducing stress concentration and improving overall structural performance
• Certified welds - independently verified weld quality gives builders and inspectors confidence in the strength and load ratings of the connection
• Increased uplift load ratings - engineered to handle the elevated demands of earthquake and high-wind loading, making this cap suitable for seismic and hurricane-prone regions
• Diamond holes for temporary fastening - allow quick positioning and alignment during installation before final fasteners are driven, saving time on the job
• Hot-dip galvanized finish - provides extra corrosion resistance beyond standard coatings, keeping the hardware protected in exterior environments and alongside treated lumber
• 7-gauge steel construction - heavy-duty material thickness delivers the structural integrity needed for demanding load-bearing column-to-beam connections

Why This Product

• Ready to install right out of the box - the included Strong-Drive SDS screws mean no separate hardware sourcing, and the screws engage a greater net section area of the column than a standard bolt attachment for a stronger, more efficient connection
• Built for tough outdoor conditions - hot-dip galvanization delivers a level of corrosion protection well suited for exposed exterior settings and direct contact with pressure-treated or chemically treated wood
• Engineered for code-sensitive applications - certified welds and increased uplift load capacity make this column cap a dependable choice on projects where seismic or wind loading requirements must be met
• Versatile fit for glulam and engineered lumber - the 3-1/8 in. beam seat accommodates standard glulam beam widths, making this cap practical for post-and-beam structures, outdoor pavilions, and heavy timber framing

Specifications

• MPN: CCQ3-6SDS2.5HDG
• Brand: Simpson Strong-Tie
• Member Size: 3-1/8 in. beam, 6x post
• Beam Width: 3-1/8 in.
• Width 1: 3-1/4 in.
• Width 2: 5-1/2 in.
• Length 1: 11 in.
• Height 1: 7 in.
• Nominal Post Size: 6x
• Material Gauge: 7-gauge steel
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• For Treated Lumber: Yes
• Country of Origin: United States

What's Included

• Simpson CCQ3-6SDS2.5HDG Column Cap
• (30) 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws (Model: SDS25212) included

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

Why are Strong-Drive SDS screws used instead of standard through bolts?

The Strong-Drive SDS Heavy-Duty Connector screws provide a lower profile than standard through bolts and attach to a greater net section area of the column, resulting in faster installation and a stronger, cleaner connection.

Is this column cap suitable for exterior or treated-wood applications?

Yes. The hot-dip galvanization (HDG) coating provides extra corrosion resistance, making the CCQ3-6SDS2.5HDG well suited for exterior environments and applications involving treated lumber.

What beam and post sizes does this column cap accommodate?

This column cap is designed for a 3-1/8 in. wide beam and a nominal 6x post.

Does this column cap provide increased resistance for seismic or high-wind conditions?

Yes. The CCQ3-6SDS2.5HDG features uplift loads that have been increased for earthquake or wind loading, and certified welds provide additional confidence in strength and performance under demanding conditions.

Related Products

• CCOQ - Column Cap Only (no straps), available for field-welding to pipe or other columns
• ECCOQ - End Column Cap Legs Omitted Quick-Install, available for field-welding to pipe or other columns

Note: Product dimensions and/or screw holes may differ from picture.