The Simpson PC4Z ZMAX Galvanized Post Cap for 4x is a Simpson PCZ series connector built for fast, reliable post-to-beam connections in structural framing applications. Constructed from 16-gauge steel with an in-line post and beam flange design, this post cap allows a single model to accommodate several post sizes, reducing the need to stock multiple connectors on the job site. Compatible with both solid sawn and rough lumber 4x posts, it delivers a sturdy, corrosion-resistant connection suited to a wide range of outdoor and demanding jobsite environments.

Key Features

• ZMAX finish is standard - provides enhanced corrosion resistance to meet exposure conditions in many environments, making this cap well suited for exterior and treated-lumber applications
• In-line post and beam flanges - one model accommodates several post sizes within the 4x nominal category, so fewer SKUs are needed to cover multiple framing scenarios
• 16-gauge steel construction - delivers structural-grade strength and rigidity for dependable post-to-beam load transfer
• Designed for solid sawn and rough lumber - compatible with both lumber types, giving installers flexibility across common framing materials
• Installs with standard fasteners - accepts 0.148 in. x 3 in. nails or #9 x 1-1/2 in. Strong-Drive SD Connector screws, allowing straightforward installation with widely available hardware

Why This Product

• One cap, multiple post sizes - the in-line flange design means a single PC4Z can serve several 4x post configurations, reducing complexity and saving time when sourcing hardware for a framing project
• Built-in corrosion protection - the ZMAX coating is standard on this cap, not an upgrade, so buyers get enhanced galvanized protection right out of the box without paying extra for a premium finish
• Fast, straightforward installation - compatibility with both nails and Strong-Drive SD Connector screws gives installers the choice to work with their preferred fastening method, keeping the job moving
• Domestic manufacturing and proven engineering - this post cap is a Simpson product made in the United States, backed by the engineering and quality standards that structural connector professionals rely on for post-to-beam and deck framing connections

Specifications

• Model Number: PC4Z
• Nominal Post Size: 4x
• Gauge: 16
• Seat Width: 3-9/16 in.
• Coating/Finish: ZMAX
• Installation Fasteners: 0.148 in. x 3 in. nails or #9 x 1-1/2 in. Strong-Drive SD Connector screw (sold separately)
• Width: 3-9/16 in.
• Country of Origin: United States

Downloads and Resources

• View Specifications

Frequently Asked Questions

What fasteners are required to install the PC4Z post cap?

The PC4Z installs with 0.148 in. x 3 in. nails or the #9 x 1-1/2 in. Strong-Drive SD Connector screw. The beam connection requires 10 fasteners and the post connection requires 8 fasteners.

What is the ZMAX finish and why does it matter?

ZMAX is an enhanced galvanized coating that is standard on the PC4Z to meet exposure conditions in many environments, providing increased resistance to corrosion compared to standard galvanized finishes.

What post size is the PC4Z compatible with?

The PC4Z is designed for use with nominal 4x posts. Its in-line post and beam flange design allows it to accommodate several post sizes within the 4x nominal category, including both solid sawn and rough lumber.

What is the seat width of the PC4Z post cap?

The PC4Z has a seat width of 3-9/16 in., which is an important dimension to verify compatibility with your beam when planning a post-to-beam connection.

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