The Simpson Strong-Tie ECCLRQ464SDS end column cap is a right-oriented L-shape end column cap for connecting a 4x main beam and 4x side beam to a 6x post in wood construction. This is a column cap connector designed for wood-to-wood beam-to-post fastening in end-of-beam applications. Model Number: ECCLRQ464SDS. If you are framing an L-shaped beam intersection on top of a post and want a cleaner, faster alternative to field-built hardware solutions, this connector is made for that job.

What makes this model matter is how it handles a tricky connection point. End-of-beam layouts where two beams intersect in an L formation can be awkward to tie together with generic brackets or improvised fastening. The ECCLQ series is purpose-built for that condition. On this specific model, the right-side orientation is already set, so you are not guessing at fitment. Simpson also calls out that the screws are configured to provide high uplift design values, which is one of the main reasons to use a dedicated structural connector here instead of trying to piece together a connection in the field.

Installation is straightforward because the connector is designed around 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws, and those screws are included. That saves time compared to a through-bolted connection and gives you a lower-profile finished assembly. Simpson specifically notes that lag screws will not achieve the same load, so this is one of those products where the fastener choice is part of the engineering, not an afterthought. The round holes are the required fastening points, and the diamond holes are there to help with temporary positioning before you fully secure the cap.

From a build standpoint, this connector uses 7-gauge steel for this size range and comes with Simpson Strong-Tie gray paint. The steel thickness is important because this is not a light-duty trim connector. It is a structural framing bracket meant to manage beam and post loads at a critical joint. Certified welds add confidence that the cap is assembled consistently and built to carry the loads it was designed for. That is the kind of detail pros care about when the connection is doing real structural work.

In practical jobsite terms, the shape and preformed geometry take a lot of layout guesswork out of the install. The cap is made for nominal member sizes of a 4x main beam, 6x post, and 4x side beam. Actual listed dimensions are about 8.5 in. deep, 7.967 in. wide, and 15.67 in. high, with a listed weight of 14.22 lb. That gives you a sense of what you are handling on site: this is substantial hardware, not a light plate connector.

The ECCLRQ464SDS is a good fit for deck framing, pavilion builds, pergolas, timber-style connections, and other structural wood framing where beams bear on top of a post and one beam returns off the side in an L configuration. It is also useful in retrofit or repair work where you need a defined engineered connector instead of a custom field-fabricated approach. If your layout needs the opposite hand, Simpson offers a left-oriented version, but this SKU is specifically the right-skewed configuration.

Bottom line: this is for builders, remodelers, deck crews, and serious DIY users who need a structural beam-to-post connector that is purpose-made for an L-shaped end condition. If your project calls for wood-to-wood fastening with tested hardware, included SDS screws, and known fitment for 4x beams on a 6x post, this Simpson Strong-Tie column cap is the right kind of solution.

Simpson Strong-Tie ECCLRQ464SDS End Column Cap for Clean L-Frame Connections

If your framing turns on top of a post and you need a real engineered answer, this connector does the job without the mess of trying to improvise it in the field.

• Who it's for: Builders and deck crews handling 4x beam to 6x post connections where a side beam meets the main beam in a right-hand L layout.
• Why it stands out: It is purpose-built for this exact connection, uses included SDS screws, and backs that up with certified welds and 7-gauge steel.
• Worth knowing: This is the right-oriented version only, and Simpson is clear that the specified SDS screws are part of the rated performance.

• What framing sizes is this connector made for? It is designed for nominal 4x main beam, 6x post, and 4x side beam applications.
• Is this a left- or right-oriented cap? This SKU is the right-oriented version. Simpson notes that the left-oriented version is ordered as ECCLLQ.
• Can I use lag screws instead of SDS connector screws? No. Simpson specifically states that lag screws will not achieve the same load.
• What kind of connection is it made for? It is a wood-to-wood end column cap used where two beams intersect in an L formation on top of a post.