The Simpson Strong-Tie Rough 4 x 6 Post Cap BC46R is an 18-gauge, G90 zinc galvanized steel connector built to create secure beam-to-post connections in light-duty structural applications. Designed specifically for rough 4x6 lumber, this post cap delivers dependable uplift and lateral resistance, making it a reliable choice for pergolas, decks, carports, and similar wood-framed structures where a proper fit on rough-sawn posts is essential.

Key Features

• Opposing flanges for increased lateral resistance - actively resist side-to-side movement at the connection point, adding stability to beam-to-post assemblies beyond basic uplift control
• Compatible with common and pneumatic nail sizes - attains full allowable load using either nail type, so installers can work with the fastening tools already on hand without sacrificing rated performance
• Sized for rough 4x6 lumber - fits rough-sawn posts correctly where a connector sized for nominal lumber would be too loose, ensuring a snug, structurally sound connection
• G90 zinc galvanized coating - provides corrosion resistance suited to exterior and treated-lumber environments, helping the connector hold up over time in exposed conditions
• Light-gauge 18-gauge construction - right-sized for light-duty applications so buyers are not over-specifying or overpaying for connector capacity they do not need

Why This Product

• Built for rough-sawn lumber from the ground up - the BC46R is specifically engineered for rough 4x6 posts, not nominal-dimensioned lumber, so it delivers a proper fit without shimming, shimming workarounds, or guesswork at the job site
• Dual resistance in a single connector - provides both uplift and lateral resistance in one piece of hardware, reducing the need for supplemental bracing hardware in qualifying light-duty beam-to-post connections
• Flexible fastening without performance trade-offs - because the connector reaches full allowable load with either common or pneumatic nails, contractors and DIYers alike can install it efficiently with the equipment they already own
• American-made Simpson Strong-Tie quality - backed by the engineering and quality standards that Simpson Strong-Tie is known for, giving buyers confidence that the connector meets the structural expectations of the application

Specifications

• Model Number: BC46R
• Nominal Post Size: 4x6 rough
• Gauge: 18
• Width 1: 4 in.
• Width 2: 6 in.
• Length 1: 4 in.
• Length 2: 4 in.
• Height 1: 3 in.
• Height 2: 3 in.
• Coating/Material: Zinc Galvanized, G90
• Brand: Simpson Strong-Tie
• Country of Origin: United States

Downloads and Resources

• View Spec Sheet

Frequently Asked Questions

What lumber size is the BC46R designed to fit?

The BC46R is sized specifically for rough 4x6 lumber, making it the correct choice when working with rough-sawn posts rather than standard nominal-dimensioned lumber.

What type of nails should be used to install the BC46R?

Install with 0.162 x 3 1/2 nails or 0.162 x 2 1/2 nails. Use all specified fasteners per the General Notes, and do not install bolts into pilot holes.

What structural resistances does the BC46R provide?

The BC46R provides both uplift and lateral resistance. Its opposing flanges are specifically designed to increase lateral resistance in beam-to-post connections.

Is the BC46R suitable for heavy-duty structural loads?

No. The BC46R is an 18-gauge post cap with light-gauge material designed for light-duty applications. For heavier loads, a heavier-gauge connector would be more appropriate.

Note: Please see item description for specifications. Product dimensions and/or screw or bolt holes may differ from picture.