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Coach Screws: Heavy-Duty Use & Pre-Drilling Tips

by Tianyu Fasteners
May 15th,2025 178 Views
What are Coach Screws?
Heavy-duty fasteners for wood-to-wood/metal-to-wood connections. Their coarse threads ensure strong grip (see image below).

Pre-Drilling Basics

 Always Pre-Drill:
  • Softwoods.
  • When screwing near wood edges.
  • For large-diameter coach screws (use bit slightly smaller than shaft diameter).

 Optional for Smaller Screws:
  • Hardwoods or small sizes may allow direct driving – test on spare material first!

 Key Tip: Proper pre-drilling prevents splitting and ensures smooth, secure installation.


Contact us now for samples: support1@tianyufasteners.com.