Connext Post to Base Connectors

Secure your posts to concrete or stone with Connext Post to Base Connectors. Designed for strength, ease of installation, and design appeal, these connectors are perfect any timber projects requiring a solid foundation.

Key Features:

  • 6061 Aluminum: Strong, corrosion-resistant, and built to last.

  • Easy Installation: Saves time compared to traditional methods.

  • Versatile Sizes: Fits posts from 3.5” x 3.5” to 12” x 12”.

  • Optional Lift: Consider a black HDPE riser for extra height and moisture protection. Shop Risers here.

Important Notes:

  • Check your timber size carefully—is it rough-sawn (nominal) or finished (actual)? Select the connector size that matches the actual dimensions of your timber.

  • Pricing includes 1/2" chamfered aluminum pins and GRK Caliburn Concrete screws.

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Post-To-Base Connector
from $49.00

The T-Connector to base is an easy connection to concrete or stone. This is the same standard connector but with concrete screws.

All Connectors are offered from 3.5” x 3.5” to 12” x 12” in size with accurate dimensions. Popular sizes for finished S4S and glulams are also available.

Includes concrete screws and pins.

Consider using an HDPE riser between Connector and base.

Need exact dimensions or drawings?
View detailed connector drawings and dimensions.

Post-to-Base Screw Placement (Concrete Installations)

For all Connext post-to-base connectors installed into concrete, follow the standardized screw pattern shown above.

Key Guidelines

  • Use (4) concrete screws per connector

  • Install screws in the green hole locations shown here

  • This applies to all connector sizes

Why Only 4 Screws?

Our engineering has standardized a 4-screw pattern to:

  • Ensure proper load transfer into the concrete

  • Maintain optimal spacing between anchors

  • Prevent over-fastening or unnecessary stress in the slab

  • Provide consistent, repeatable installation across all sizes

What About the Other Holes?

You may notice additional holes in each connector.

  • These are not used for concrete installations

  • They are designed for wood-to-wood connections, where all holes should be filled

Installation Tips

  • Drill pilot holes: 1/4" diameter x 5.5" depth, with a minimum 5.5" embedment.

  • Drill clean holes and remove debris before installing screws

  • Avoid over-torquing fasteners

Diagram showing correct screw hole placement for Connext post-to-base connectors in concrete, highlighting four green anchor points across multiple connector sizes.