Chipboard screws 5.0 x 80 partial thread

Description

Strong 5.0 x 80 mm Wood Screws for Robust Wood-to-Wood Connections

These 5.0 × 80 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 ensures optimal grip and improved torque transfer during installation, preventing cam-out and allowing the screw to be driven in with precision and control.

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

Thanks to the combination of a 5.0 mm diameter and an 80 mm length, this size is ideal for medium to heavy-duty timber constructions where deeper penetration is required.

Why choose these chipboard screws?

• Ideal for boards and panels approximately 25–30 mm thick
  
• Partial thread — firmly pulls two wooden parts together
  
• 5.0 mm diameter — high load capacity and pull-out resistance
  
• Torx TX25 — optimal grip and reduced risk of head damage
  
• Zinc plated — corrosion protection for indoor use
  
• Pack of 200 pieces — suitable for larger projects

When do you use 5.0 x 80 mm screws?

A 5.0 x 80 mm partial thread chipboard screw is used when a deep wood connection is required with sufficient clamping force.

Typical applications include:

• Fixing 25–30 mm thick boards
  
• Connecting timber battens and beams
• Furniture construction with heavy panels
• Interior framing and timber structures
• Wood-to-wood connections requiring high pull-out resistance

Why is 80 mm a logical length?

For a board thickness of approximately 28 mm, the general guideline is:

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

28 mm × 3 ≈ 84 mm

An 80 mm screw provides nearly the same penetration depth, ensuring that:

✔ The connection is very strong
✔ High pull-out resistance is achieved
✔ The structure remains stable

For this reason, 5.0 × 80 mm screws are commonly used for medium to heavy-duty wood constructions.

What makes these 5.0 x 80 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 is not left under tension
• The screw has sufficient grip in the supporting wood

Thanks to the partial thread, only the lower section of the screw grips into the timber. This actively pulls the upper material downward, creating a strong and stable connection without leaving gaps.

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

Advantages of partial thread at 5.0 x 80 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 assembling timber constructions and thicker panels, partial thread screws are often the best 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 for 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 for direct ordering

Not sure about the right length? Also view our 5.0x70 mm and 5.0x90 mm variants for thinner or thicker materials.

Specifications

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