The Simpson Rough 4X Post Cap is a Simpson engineered connector built to create secure beam-to-post connections where 4x rough-cut lumber is used. Fabricated from 18-gauge G90 zinc galvanized steel, this light-duty post cap is sized specifically for rough lumber dimensions - not nominal-sized lumber - making it the right choice for framing projects that call for true rough-cut 4x posts. Its opposing flange design delivers both uplift and lateral resistance, giving builders a dependable structural connection in exposed or outdoor framing environments.

Key Features

• Sized for 4x rough-cut lumber - fits true rough lumber dimensions rather than standard nominal sizing, so there is no guesswork or shimming required when working with rough-cut posts
• Opposing flanges for lateral resistance - the flange configuration actively resists lateral movement at the connection point, adding stability beyond basic uplift protection
• Compatible with common and pneumatic nail sizes - attains full allowable load using either nail type, giving installers flexibility without sacrificing rated performance
• 18-gauge G90 zinc galvanized steel construction - the G90 coating provides corrosion resistance suited for outdoor, exposed, or moisture-prone framing applications
• Light-duty material gauge matched to application demands - right-sized for beam-to-post connections in light-duty structural framing, avoiding unnecessary over-engineering

Why This Product

• Built for rough lumber jobsites - many post caps are sized for nominal lumber and simply do not fit rough-cut stock properly; this cap is engineered specifically around 4x rough dimensions, making it a reliable fit for timber framing and rough-cut construction without modification
• Dual load resistance in one connector - by addressing both uplift and lateral forces through its opposing flange design, this post cap handles two critical structural demands at once, reducing the need for supplemental hardware at the connection
• G90 galvanized protection for long-term durability - the G90 zinc galvanized coating makes this connector a practical choice for outdoor decks, covered structures, and other exposed framing where corrosion resistance is a priority
• Fastener flexibility that keeps work moving - whether a crew is working with a standard nail gun or hand-driving common nails, the BC4R reaches its full rated load capacity either way, cutting down on delays from fastener compatibility issues

Specifications

• Model Number: BC4R
• Nominal Post Size: 4x rough
• Gauge: 18
• Width 1: 4 in.
• Width 2: 4 in.
• Length 1: 4 in.
• Length 2: 4 in.
• Height 1: 3 in.
• Height 2: 3 in.
• Coating/Material: Zinc Galvanized, G90
• Country of Origin: United States

Approved Applications

• Beam-to-post connections in light-duty framing
• Structural connections involving 4x rough-cut lumber posts
• Applications requiring both uplift and lateral load resistance
• Outdoor and exposed framing projects where G90 galvanized corrosion resistance is needed

Frequently Asked Questions

What size post is the BC4R designed to fit?

The BC4R is specifically sized for a 4x rough post. It is important to note that this cap is intended for rough lumber dimensions, not standard nominal-sized lumber. Both W1 and W2 dimensions measure 4 inches to accommodate the rough post.

What type of nails should be used to install the BC4R?

Install the BC4R using 0.162 x 3-1/2 inch nails or 0.162 x 2-1/2 inch nails. The connector is designed to attain its full allowable load using either common nail or pneumatic nail sizes, giving installers flexibility in their fastener choice.

What load resistance does the BC4R post cap provide?

The BC4R provides both uplift resistance and lateral resistance. Its opposing flanges are specifically designed to increase lateral resistance, making it a well-rounded connector for light-duty beam-to-post connections.

Are there any special installation precautions for the BC4R?

Yes. Use all specified fasteners as directed in the General Notes. Do not install bolts into pilot holes. Following these guidelines ensures the connector performs to its rated capacity and maintains the integrity of the structural connection.