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Structural Screws for Metal Timber Connectors – When and Why to Use Them

March 26, 2026 by
Structural Screws for Metal Timber Connectors – When and Why to Use Them
Francisco Kaspar

Metal connectors such as beam supports, brackets, and perforated plates are essential components in modern wood construction.

To ensure reliable structural performance, these connectors must be installed with appropriate structural fasteners..

Structural connector screws are specifically developed to secure metal connectors to wooden structural elements, providing quick installation and safe load transfer.

What are Structural Connector Screws?

Structural connector screws are fasteners designed for steel-wood structural connections..

Unlike common wood screws, they feature:

  • reinforced heads for metal plates,

  • optimized structural threads,

  • self-tapping cutting tips,

  • high torsional strength,

  • and a Torx drive for professional installation.

These features allow for the safe transfer of structural loads from the metal connector to the wood..

Typical Applications

Connector screws are commonly used in:

  • joist hangers

  • structural brackets,

  • beam connectors,

  • perforated plates,

  • reinforcement plates,

  • post bases and column connectors

  • timber-to-concrete steel connectors

They are suitable for installation in:

  • solid structural timber

  • glued laminated timber

  • CLT

  • LVL

This makes them ideal for wood structures, roofs, and engineered wood construction.

5 mm vs 8 mm Connector Screws

The two most common diameters used in metal connectors are 5 mm and 8 mm.

5 mm Connector Screws

Used in standard connectors such as:

  • joist hangers

  • light brackets

  • perforated plates,

They provide quick installation and reliable structural performance.

8 mm Structural Screws for Connectors

Used in more demanding structural applications:

  • large brackets

  • post bases and column connectors

  • beam connectors,

  • structural metal plates

They offer greater load capacity and more robust structural connections.

Screws vs Nails for Connectors

Traditionally, metal connectors were installed with ring nails.

However, structural screws are increasingly used in modern construction.

Advantages of screws for connectors:

  • faster installation with power tools

  • better control during application

  • lower risk of wood splitting

  • easy adjustment or removal

  • high structural performance

For many professionals, screws representa more efficient and precise solution.

How to Choose the Right Screw

When selecting screws for connectors, consider:

  • the diameter of the connector holes

  • structural load

  • thickness of the wood

  • type of connector

  • installation conditions

The correct choice ensures that the connection meetsthe structural requirements of the project.

Structural Fastening for Wood Construction

Screws for structural connectors are an essential solution for modern wood construction, offering reliable performance and efficient installation.

They are widely used in:

  • wood structures

  • roofs

  • pergolas and outdoor structures

  • wood engineering construction

  • structural carpentry

To learn more about dimensions, applications, and selection, refer to our complete guide:

➡️ Structural Screws for Metal Wood Connectors

Partial Thread vs Full Thread Structural Screws
Understanding How Thread Design Affects Timber Connections