AC Adjustable Post Cap

Create a secure connection between a wood beam and post with the Simpson Strong-Tie® AC Adjustable Post Cap. Designed for both new construction and retrofit applications, the AC post cap provides dependable structural support where a beam needs to be connected directly to a post.

The adjustable design works with common nominal lumber sizes, with AC4 for 4x lumber and AC6 for 6x lumber. Multiple fastening patterns allow the connector to accommodate different load requirements when installed according to Simpson Strong-Tie specifications. Simpson identifies the AC as a connector designed to provide a secure beam-to-post connection with minimum and maximum nailing patterns for different load options.

A ZMAX® galvanized coating provides enhanced corrosion resistance for exterior and treated-lumber applications. The connector also eliminates the need to fasten directly into the end grain of the post, helping create a stronger and more reliable connection.

Key Features

• Designed to connect wood beams securely to posts

• Suitable for new construction and retrofit applications

• Adjustable design provides installation flexibility

• AC4 fits 4x nominal lumber

• AC6 fits 6x nominal lumber

• Multiple fastening patterns accommodate different load requirements

• Helps eliminate fastening directly into wood end grain

• ZMAX® galvanized coating provides enhanced corrosion resistance

• Suitable for many exterior wood-framing applications

• Load rated when installed in pairs as specified

• Manufactured by Simpson Strong-Tie®

Available Sizes

• AC4: For 4x nominal lumber

• AC6: For 6x nominal lumber

Reliable Beam-to-Post Connection

The Simpson Strong-Tie AC Adjustable Post Cap provides a practical solution for securing beams to posts in decks, pergolas, patio covers, and other wood-framed structures. Its adjustable design, corrosion-resistant finish, and multiple fastening options make it useful for both new installations and retrofit projects.