Chipboard screws 4.5 x 40 full thread zinc plated - 200 pieces

• Yes → for MDF, plywood, OSB and chipboard
• Yes → when grip along the full length is required
• Yes → for direct fastening to wood or sheet material
• Yes → for fittings, hinges and assembly parts
• No → when two wooden parts need to be pulled tightly together
• No → when stainless steel is required for damp outdoor applications

What is the 4.5 x 40 mm chipboard screw?

The 4.5 x 40 mm chipboard screw is a commonly used wood screw for installation in sheet material and wood. Thanks to its 40 mm length, this screw is suitable for materials of around 15 to 20 mm thick where sufficient penetration into the supporting material is required.

This version has a full thread. This means the thread runs along almost the full length of the screw. As a result, the screw grips along its full length and creates a stable fastening in sheet materials and base materials.

The Torx TX20 drive provides strong grip during installation. This allows controlled fastening and reduces the risk of cam-out compared with drive types with less grip.

Does this 4.5 x 40 mm screw suit your application?

What makes this 4.5 x 40 mm version practical?

This 4.5 x 40 mm chipboard screw combines a practical length with a strong diameter. This makes it suitable for many common installation jobs in wood and sheet material.

For this version, that means the screw is designed for controlled installation, good grip and neat processing in sheet material, wood and assembly parts.

• 4.5 mm diameter: strong fastening with a good balance between grip and workability.
• 40 mm length: suitable for many sheet materials and wooden parts.
• Full thread: grip along the full screw length.
• Torx TX20: good power transfer and less chance of damaging the screw head.
• Zinc plated: suitable for dry environments and indoor applications.

When do you use 4.5 x 40 mm full thread screws?

A 4.5 x 40 mm full thread screw is used when you need a strong fixing in wood or sheet material without the screw having to pull two wooden parts tightly together. The thread along the full length provides even grip.

Why is 40 mm technically logical? For sheet material of around 15 to 20 mm thick, a 40 mm screw provides sufficient penetration into the supporting material. This creates a stable fixing without the screw being unnecessarily long in many applications.

Advantages of full thread with 4.5 x 40 mm

For screws used in sheet material, full thread is an important advantage. Because the thread runs along almost the full screw length, the screw has grip along the entire length.

This creates an even fixing. This is especially important in MDF, plywood, OSB, chipboard and direct fastening to base materials.

• grip along the full screw length
• stable fastening in sheet material
• suitable for direct installation to a base material
• less clamping action than partial thread screws

For wood-to-wood joints where two parts must be pulled tightly together, a partial thread screw is often a better choice.

Installation advice for 4.5 x 40 mm chipboard screws

For proper installation, it is important to use the correct bit, machine and working method. The Torx TX20 drive allows the screw to be driven in with good control and strong grip on the screw head.

• Always use a matching Torx TX20 bit.
• Use a screwdriver with controlled torque.
• Pre-drilling is usually not required in softwood.
• Pre-drilling is recommended in hardwood.
• Drive the screw in carefully to avoid damage to the screw, bit and material.
• Do not install too close to the edge without pre-drilling to reduce the risk of splitting.

When working with MDF, plywood and other sheet materials, controlled driving is important for a neat finish. In hard materials or near edges, pre-drilling is often the safer choice.

Not sure about the correct length?

Is 40 mm slightly too short or too long for your application? Then compare similar sizes in the same category. These may be suitable when you need more or less penetration depth.

Buy 4.5 x 40 mm chipboard screws