Simpson Strong-Tie BC4Z-R Post Cap/Base, Z-Max Steel, 4x4 In.

The Simpson Strong-Tie BC4Z-R is a dual-purpose post cap and base connector designed to join 4x4 posts to beams. This connector solves a common framing challenge: splitting at the post end grain and the difficulty of driving nails into end grain. By providing a dedicated connection point on the side grain of the post, this cap/base eliminates those problems and creates a secure, reliable joint between post and beam.

The dual-purpose design works as both a post cap, with the beam on top, and as a post base, with the beam below. This versatility makes it suitable for light structural connections where you need a firm assembly that resists shifting.

Features and Benefits

• Reduces Post Splitting: By connecting the beam to the side grain of the post rather than the end grain, this cap minimizes the risk of post splitting and checking.
• Eliminates End-Grain Nailing: No more struggling to drive nails into the end of a post, which is difficult and unreliable.
• Dual-Purpose Design: Works as both a post cap and a post base, offering flexibility in your framing applications.
• Double-Shear Nailing: The design creates strong connections on both sides of the joint.
• Z-Max Galvanized Steel Construction: Made from 18-gauge galvanized steel for durability.

Specifications

• Brand: Simpson Strong-Tie
• Model: BC4Z-R
• Size: Fits 4x4 posts
• Material: 18-gauge galvanized (Z-Max) steel
• Connection type: Dual-purpose post cap/base

How to Use

• Install three 16d HDG common nails or 16d x 2-1/2" HDG joist nails into each side on surface A.
• Install three 16d HDG common nails or 16d x 2-1/2" HDG joist nails into each side on surface B.
• Total of 12 nails required.