The Simpson Strong-Tie CCQ66SDS2.5 CCQ Column Cap is a wood-to-wood column cap designed to connect a nominal 6x beam to a nominal 6x post. This is a column cap designed for post-to-beam structural fastening in wood construction. Model Number: CCQ66SDS2.5. If you are building a pergola, deck cover, porch roof, pavilion, or other top-supported structure, this connector is made to create a stronger, cleaner post and beam connection than a typical through-bolt setup.

What makes this connector matter is how it carries load. The seat extends beyond each side of the column, adding bearing area under the beam so the load is distributed more effectively into the post. For this specific model, Simpson Strong-Tie lists allowable loads of 6,785 lb uplift and 30,250 lb down load in Douglas Fir or Southern Pine conditions shown in the manufacturer table. In plain terms, this is the kind of hardware you spec when the connection is doing real structural work, not just dressing up a timber frame.

The CCQ66SDS2.5 uses 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws rather than standard bolts. That is a practical advantage on the jobsite. You get a lower-profile connection, quicker installation, and attachment into a greater net section area of the column than bolt attachment normally provides. The result is a cleaner install with less time spent drilling and lining up hardware, which matters when you are setting multiple beam-to-post connections in sequence.

Simpson Strong-Tie also built in details that help during installation. The diamond holes are there for temporary fastening, which helps when you are holding alignment before driving the full screw pattern. Certified welds add confidence in the strength of the assembly, and the gray painted finish is the standard finish for this version. For the CCQ66SDS2.5 size, the connector is made from 7-gauge steel, which is the material thickness Simpson specifies for CCQ6 models.

In terms of fit, this model is sized for a nominal 6x beam and 6x post. Manufacturer dimensions for the CCQ66SDS2.5 are W1 5-1/2 in., W2 5-1/2 in., L 11 in., H 7 in. Lowe's also lists the actual depth at 11 in. and actual width at 5.842 in. That means you are looking at a substantial connector intended for exposed structural framing, not light trim work or decorative-only applications.

This column cap is a strong fit for contractors, deck builders, timber framing crews, remodelers, and serious DIY users working on structural outdoor wood projects. If you need a structural beam-to-post connector that installs faster than a through-bolted setup and gives you high load values in a 6x-to-6x configuration, the Simpson Strong-Tie CCQ66SDS2.5 CCQ Column Cap is the right kind of hardware. If you are matching existing plans or engineering details, be sure your specified beam and post size, screw pattern, and corrosion requirements align with this painted steel version.

Simpson Strong-Tie CCQ66SDS2.5 CCQ Column Cap Means Business

If you are building a real structural 6x post-to-6x beam connection and do not want to mess around with bulky through-bolts, this is the kind of connector you buy.

• Who it's for: Contractors, deck and outdoor structure builders, and serious DIY users working on structural wood framing with 6x members.
• Why it stands out: High published load values, an extended seat that actually supports the beam, and SDS screw installation that is faster and cleaner than traditional bolt-heavy hardware.
• Worth knowing: This is the painted steel version, so make sure the finish matches your exposure conditions and project requirements. Also stick with the specified SDS connector screws if you want the listed performance.

• What does this connector join? It is designed to connect a nominal 6x beam to a nominal 6x post in wood construction.
• Is this a bolt-on column cap? No. It is designed to install with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws rather than standard through bolts.
• What is the finish on this version? This model has the standard Simpson Strong-Tie gray painted finish.
• What are the published allowable loads for CCQ66SDS2.5? Simpson lists 6,785 lb allowable uplift and 30,250 lb allowable down load for the CCQ66SDS2.5 in the provided load table.