Screws (flat head 3.9mm * 40mm )

Screws (flat head 3.9mm * 40mm )


flat head 3.9mm * 40 mm



Featuring deep threads with minimal body diameter and reduced material displacement, our product ensures exceptional holding strength, especially in soft materials like softwood and particle boards. Additionally, its sharp thread angles and pointed design provide superior penetration and thread engagement from the very first turn.



  • High Holding Strength
  • Sharp Threads
  • Minimal Body Diameter


  • Flat Head
  • Size – 3.9mm * 40 mm

Delivery Policy

We are committed to providing you with exceptional service from start to finish, including a seamless delivery experience. Our delivery policy ensures that your decking products arrive promptly and securely. With a focus on efficiency and customer satisfaction, we strive to exceed your expectations. In this policy, we outline our delivery process, shipping options, estimated delivery times, and any applicable fees. We value your trust in our products, and we are dedicated to making your experience with Layback Decking as convenient and hassle-free as possible.

  • We provide deliveries within a radius of 50 Kms of Perth City.
  • In case you want a delivery outside the 50 kms radius, please contact our office for an exact quote on the delivery fees
  • Our standard delivery time is 1-3 business days after receiving payment
  • Please note that for supply only orders, we only deliver products till your driveway


We are here to facilitate returns and exchanges for this product, in line with the procedures outlined in our dedicated returns policy page.