Steel Tough Self Drilling Screw With Zinc Plated Finish Serrated Hex Washer Head Slotted Drive Number Three Drill Point Five Sixteenth Inch Diameter Eighteen Threads Per Inch One Inch Length Pack Of Twenty Five For Metal Projects
✔️ Hex washer head with serrated flange, slotted drive, 1 in length
These steel self-drilling screws feature a zinc-plated finish to resist corrosion and a hex washer head with a serrated flange for a strong, non-slip grip. They’re designed for metal-to-metal fastening in enclosures, frames, roofing, and other metal projects where quick, reliable fastening matters.
✅ Pack size: 25 screws in the pack
✅ Material: steel
✅ Finish: zinc plated for corrosion resistance
✅ Head and drive: hex washer head with serrated flange; slotted drive
✅ Drill point and size: #3 drill point, 5/16 in diameter, 1 in length; 18 TPI
💡 What is a self-drilling screw used for in metalworking projects?
Self-drilling screws drill their own hole and thread as they go, making fast work of metal assemblies. Handy for quick installs where pre-drilling would slow things down.
- They are commonly used for metal enclosures, frames, and roofing- They reduce assembly time by eliminating pilot holes
- Select correct drill point, length, and thread pitch for best bite