The Simpson LPC6Z Adjustable Post Cap is a 16-gauge steel connector built to create a secure, load-bearing link between a 4x or 6x beam and post. Finished with Simpson's ZMAX galvanization for enhanced corrosion resistance, this post cap is well suited for exterior framing, deck construction, and retrofit projects where a reliable structural connection is needed. Its adjustable, universal design works across a variety of connection configurations without requiring dedicated right-hand or left-hand components, making it a practical choice for both new builds and existing structures.

Key Features

• Adjustable design - allows greater connection versatility so the cap accommodates a wider range of beam and post configurations without modification
• Universal orientation, installed in pairs - eliminates the need for rights and lefts, so you stock one SKU and install identical caps on both sides for a balanced connection
• Stronger than angled nailing or screw fastening - eliminates nailing into end grain, delivering a more structurally sound joint where load transfer is critical
• Can be installed after beams have been put in place - simplifies retrofit work by allowing the connector to be added to an existing assembly without dismantling the structure
• Compatible with nominal 4x or 6x lumber - covers two common post and beam dimensions in a single connector, reducing the number of parts needed on the job
• 16-gauge steel construction - provides the structural rigidity required for post-to-beam connections in load-bearing framing applications
• ZMAX galvanization - offers extra corrosion resistance compared to standard galvanizing, making this cap suitable for exterior environments and direct contact with treated lumber where moisture and chemicals are present

Why This Product

• Retrofit-ready without rework - because the cap can be installed after beams are already in position, contractors and DIYers can reinforce or upgrade an existing post-to-beam connection without tearing apart the surrounding structure
• One connector, two lumber sizes - the adjustable design spans both 4x and 6x nominal lumber, so builders working with mixed framing dimensions can rely on a single connector style rather than sourcing separate hardware for each member size
• Built for outdoor and treated-wood applications - ZMAX galvanization provides a thicker zinc barrier specifically suited to the moisture exposure and chemical content common in exterior decks, pergolas, and pressure-treated framing
• Eliminates weak-point fastening - by replacing angled nailing and end-grain screw fastening with a formed steel connector, the LPC6Z delivers a mechanically stronger joint that meets the demands of structural post-and-beam assemblies

Specifications

• MPN: LPC6Z
• Gauge: 16
• Coating/Finish: ZMAX
• Member Size: 4x or 6x
• Install With: 10d common nails (sold separately)
• Width: 5-9/16 in.
• Length: 5-1/2 in.
• Country of Origin: United States

Frequently Asked Questions

Can the LPC6Z be used in retrofit applications, or is it only for new construction?

The LPC6Z is suitable for both new construction and retrofit applications. Its adjustable design and the ability to install it after beams have already been put in place make it especially convenient for retrofitting existing structures where additional structural support is needed.

Why must the LPC6Z always be installed in pairs?

Installing the LPC6Z in pairs ensures a balanced and structurally sound connection between the beam and post. The universal design means there are no dedicated right-hand or left-hand caps - both connectors in the pair are identical, simplifying procurement and installation.

Why is the ZMAX coating important for this post cap?

ZMAX galvanization provides a thicker zinc coating than standard galvanizing, offering extra corrosion resistance. This makes the LPC6Z well suited for exterior applications and use with treated lumber, where exposure to moisture and chemicals could otherwise degrade a connector over time.

What lumber sizes is the LPC6Z compatible with?

The LPC6Z is designed for use with nominal 4x or 6x lumber, connecting a beam of those dimensions to a post. Its adjustable design accommodates a variety of connection configurations within those member sizes.