Product Overview

The Simpson Strong-Tie BC ZMAX Galvanized Post Cap for 6x (BC6Z) is a heavy-duty connector designed to securely fasten 6x beams to wooden posts in structural framing applications. It’s commonly used in deck building, pergolas, patio covers, and other outdoor wood framing projects where strength and stability matter.

Made from 18-gauge ZMAX galvanized steel, this cap offers extra corrosion resistance, making it well-suited for use in exterior conditions or with treated lumber. The design allows for fast, accurate alignment of beams to posts, ensuring load transfer and reducing lateral movement at joints.

The BC6Z features pre-punched holes for ease of installation using nails or structural screws. It supports both in-line and corner post applications, giving you flexibility depending on your framing needs.

Technical Specs

• Brand: Simpson Strong-Tie
• Model Number: BC6Z
• Product Type: Galvanized post cap
• Material: 18-gauge steel
• Finish: ZMAX galvanization for corrosion resistance
• Compatible Lumber Size: 6x nominal (actual: 5-1/2 in.)
• Fastening Method: Pre-punched holes for nails or screws
• Application: Connects 6x beams to wooden posts
• Use Case: Outdoor framing, decks, pergolas, patio covers

What It’s Good For

This post cap is great for ensuring strong structural connections where 6x beams meet vertical posts. It’s especially valuable in projects that require outdoor durability, such as deck construction or fencing frameworks, where long-term exposure to weather is expected.

Compared to Other Connectors

Compared to standard post caps or non-galvanized connectors, the BC6Z’s ZMAX finish offers superior protection against rust—especially when used with pressure-treated lumber. It also simplifies alignment and provides better stability than using toenailing or brackets alone.

Also Known As

• Simpson Strong-Tie BC6Z Post Cap
• Simpson ZMAX Galvanized Beam-to-Post Cap
• BC6Z Outdoor Structural Connector
• Simpson 6x Post Top Bracket