A guide to Wood Fixings

Wood Fixings

Wood fixings are used to join timber components or attach wood to materials such as metal, masonry and plastic. From furniture assembly to timber construction, the right fixing helps create a secure connection and a neat finish.

Choosing a fixing involves more than selecting its size. The timber type, joint design, expected loads and operating environment all influence which fastening method is suitable.

Common Types of Wood Fixings

Wood Screws

Wood screws have threads designed to grip timber. They are widely used in furniture, cabinetry, decking and general joinery, and can usually be removed when an assembly needs to be repaired or adjusted.

Select the screw length, diameter, head style and material for the joint. For load-bearing work, use screws specifically rated for the application rather than assuming a general-purpose screw is suitable.

Nails

Nails provide a quick fastening method for many timber assemblies. Common types include round wire nails, lost-head nails, clout nails and panel pins. Each has a different purpose, from general construction to securing thin panels or finishing trim.

The nail type, length and shank design affect holding performance. Structural connections require the specified nails and installation pattern.

Bolts and Coach Screws

Bolts pass through prepared holes and are secured with nuts, typically with washers to spread the load. Coach screws have coarse threads that engage directly with timber and normally require a correctly sized pilot hole.

Both are used in timber frames, fencing and garden structures, but their suitability depends on the joint design, timber dimensions and loading.

Dowels

Dowels are cylindrical pins used to align and connect components. Wooden dowels are commonly combined with adhesive in furniture and cabinetry to create concealed joints. Accurate hole positioning and a suitable fit are important for a reliable assembly.

Brackets and Connectors

Angle brackets, joist hangers, corner braces and other timber connectors help join or support timber components. Use the fixings specified by the connector manufacturer, as substituting screws or nails can affect the connection's performance.

Materials and Finishes

Wood fixings are available in materials such as carbon steel, stainless steel and brass. Steel fixings may also have zinc plating, galvanising or other protective coatings.

Corrosion resistance varies by material, grade and coating. For outdoor, damp or coastal conditions, select a fixing suitable for the exposure and compatible with the timber treatment and any adjoining metalwork. Do not assume every zinc-plated or stainless steel fixing is suitable for every environment.

Choosing the Right Fixing

  • Load and joint design: Consider the forces acting on the connection, including withdrawal and shear, rather than weight alone.
  • Timber type: Timber density, thickness and condition affect holding performance and the risk of splitting.
  • Environment: Account for moisture, weather exposure and contact with treated timber.
  • Dimensions: Choose the correct fixing length and diameter, with adequate engagement and suitable edge distances.
  • Appearance and access: Consider whether the fixing should be concealed and whether the assembly needs to be dismantled later.

Installation Tips

  1. Check the fixing manufacturer's guidance before preparing the joint.
  2. Drill pilot and clearance holes where required, especially in hardwoods or close to timber edges.
  3. Use the correct driver, drill or installation tool for the fixing.
  4. Tighten carefully to avoid stripping the timber, damaging the head or crushing the material.
  5. For structural connections, follow the specified fixing type, spacing and installation pattern.

Typical Applications

Wood fixings are used in furniture, cabinetry, flooring, decking, fencing, garden structures and timber construction. Each application has different requirements, so a fixing that works well in one joint may not be suitable for another.

A Reliable Connection Starts with the Right Choice

Match the fixing to the timber, joint and service conditions. For load-bearing applications, use a properly designed connection and check the relevant product specifications rather than relying on fixing size or appearance alone.