Simpson Strong-Tie BC40Z Post Cap/Base, Z-Max Steel, 4 x 4 In.

The Simpson Strong-Tie BC40Z is a dual-purpose post cap and base connector designed to create strong, reliable joints between 4x4 posts and beams. This galvanized steel hardware eliminates the need to drive nails into the end grain of posts, which can cause splitting and weaken the wood structure. By redirecting fasteners through the connector's flanges instead, the BC40Z preserves the integrity of your framing while delivering a secure, properly aligned connection.

The dual-purpose design works equally well as a post cap (connecting beam to post from above) or as a post base (supporting a post from below), making it a versatile solution for various framing applications. Double-shear nailing between beam and post provides added strength, offering superior holding power compared to angled nailing or screw fastening alone.

Features and Benefits

• Prevents Post Splitting: Removes the need to nail into the end grain of posts, reducing the risk of wood checking and splitting that weakens structures over time.
• Double-Shear Nailing: The connector's design creates dual nailing surfaces between beam and post, distributing load more evenly and delivering stronger connections than conventional methods.
• Dual-Purpose Design: Functions as both a post cap and post base, providing flexibility for cap applications, base applications, or light-duty jobs requiring either configuration.
• Maintains Wood Strength: Helps preserve the structural integrity of wood posts by eliminating the need to nail through the post's end grain.
• Z-Max Galvanized Steel Construction: Made from 18-gauge Z-Max galvanized steel for long-lasting performance.

Specifications

• Brand: Simpson Strong-Tie
• Model: BC40Z
• Size: 4 x 4 inches
• Material: 18 gauge Z-Max galvanized steel
• Fastening: Install with 16D HDG commons or 16D x 2-1/2" HDG joist nails; three nails per side on Surface A, four nails per side on Surface C (fourteen nails total)