Heavy Duty Steel Thread Cutting Screw With Type F Point, Zinc Plated Serrated Hex Washer Head, 5/16-18 Thread Size, 1 1/4 Inch Length, Pack Of 10 For Heavy Gauge Sheet Metal Aluminum Cast Iron Brass And Plastic

Heavy Duty Zinc Thread Cutting Screw, 5/16-18, 1.25 in
✔️ 5/16-18, 1.25 in, zinc-plated serrated hex washer head, pack of 10

This heavy-duty steel thread cutting screw is equipped with a Type F point and a serrated hex washer head, ideal for assemblies in heavy gauge sheet metal, aluminum, cast iron, brass, and plastic. It’s built for strength where it matters most, with corrosion-resistant zinc plating.

✅ Thread size: 5/16-18
✅ Length: 1-1/4 in
✅ Material: steel
✅ Finish: zinc plating
✅ Head: hex washer with serrated flange
✅ Point: Type F
✅ Pack: 10 screws

💡 What is a heavy duty thread cutting screw used for in metal fabrication? This handy fastener is designed for quick, secure assemblies in metal and plastic. - For joining heavy gauge sheet metal, aluminum, cast iron, brass, and plastic. - Handy when space above the head is tight, thanks to the hex washer head. - Serrated flange distributes clamping load to resist loosening. - Type F point provides efficient cutting in hard materials.