Chipboard screws 5.0 x 90 partial thread

Description

Strong 5.0 x 90 mm Wood Screws for Robust Wood-to-Wood Connections

These 5.0 × 90 mm partial thread chipboard screws are designed for strong wood connections in solid timber, plywood, MDF and chipboard. The zinc-plated coating protects the screws against corrosion and makes them suitable for indoor applications.

The Torx TX25 drive provides optimal grip during installation and prevents cam-out. This allows the screw to be driven in efficiently and with full control, even with longer screws such as this 90 mm version.

The countersunk head sits neatly flush with the wood surface, ensuring a clean finish for both structural work and visible applications.

Thanks to the combination of a 5.0 mm diameter and 90 mm length, this size is ideal for heavy-duty wood connections where deep penetration and high pull-out resistance are required.

Why choose these chipboard screws?

• Ideal for 30–35 mm thick boards and panels
  
• Partial thread — firmly pulls two wooden parts together
• 5.0 mm diameter — high load capacity and stability
• Torx TX25 — optimal grip with reduced risk of cam-out
• Zinc plated — corrosion protection for indoor use
• Pack of 200 pieces — suitable for larger projects

When do you use 5.0 x 90 mm screws?

A 5.0 x 90 mm partial thread chipboard screw is used when extra penetration depth and clamping force are required in timber constructions.

Typical applications include:

• Fixing 30–35 mm thick boards
  
• Connecting wooden battens and beams
• Furniture construction with heavy panels
• Timber framing and wooden structures
• Wood-to-wood connections requiring high pull-out resistance

Why is 90 mm a logical length?

For a board thickness of approximately 30 mm, the general guideline is:

The screw should penetrate at least 2.5 to 3 times the thickness of the top material into the supporting timber.

30 mm × 3 ≈ 90 mm

With a 90 mm screw, this means:

✔ Sufficient penetration depth
✔ High pull-out resistance
✔ A stable structural connection
✔ Reduced risk of materials loosening

This makes 5.0 × 90 mm an excellent choice for strong timber constructions.

What makes these 5.0 x 90 mm screws suitable for MDF, plywood and solid timber?

When working with thicker wooden components, it is important that:

• The top material is firmly pulled against the supporting timber
• The connection remains stable under load
• The screw has sufficient grip in the supporting wood

Thanks to the partial thread, only the lower section of the screw engages in the timber. This actively pulls the upper material downward, creating a strong and stable connection.

The 5.0 mm diameter also provides additional torsional and bending strength during installation.

Advantages of partial thread at 5.0 x 90 mm

Unlike full thread screws, this version has thread only on the lower section.

This results in:

✔ Higher clamping force between two wooden parts
✔ Tighter connection of structural components
✔ Reduced risk of open joints
✔ More efficient wood-to-wood fastening

For structural wood connections with thicker panels, partial thread screws are often the preferred choice.

Installation and mounting advice

For best results:

• Use a Torx TX25 bit
  
• Pre-drilling is usually not required in softwood
• A small pilot hole is recommended in hardwood
• Drive the screw slowly and in a controlled manner

Tip: see our category for screwdriver bits and holders to choose the correct bit size and quality.

Why order these screws from EnergyBy?

✔ Directly available from stock
✔ Competitive price per pack
✔ Clear and complete product specifications per size
✔ Fast and reliable delivery
✔ Matching Torx bits and fastening materials available

This ensures you order not only the correct chipboard screws, but also the tools needed for efficient installation.

Not sure about the right length? Also view our 5.0x70 mm and 5.0x80 mm variants for thinner materials.

Specifications

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