Beefy Heavy-Duty Steel Thread Cutting Screw With Type F Point, 5/16-18 Thread Size, 1-1/2 Inch Length, Zinc Plated Finish, Hex Washer Head, Slotted Drive, For Heavy Gauge Sheet Metal Aluminum Cast Iron Plastic, Pack Of 10

Heavy-Duty Zinc Thread Cutting Screws, 5/16-18, Pack of 10
✔️ 5/16-18 UNC, Type F point, hex washer head, zinc plated

This heavy-duty steel thread-cutting screw is designed to bite into thick materials, creating secure threads as it installs. It's ideal for heavy gauge sheet metal, aluminum, cast iron, brass, and plastic, in automotive, appliance, and industrial assemblies.

✅ Size: 5/16-18 UNC, length 1-1/2 in (38.1 mm), diameter 0.3125 in (7.94 mm)
✅ Drive: slotted, hex washer head for secure seating
✅ Finish: zinc plating for corrosion resistance and a bright, reflective finish
✅ Material: steel for strength in heavy-duty tasks
✅ Pack: 10 screws per pack for bulk projects

💡 What is a heavy-duty thread cutting screw used for in metalworking?

A handy fastener for secure joints and quick assemblies in metalworking contexts.

- creates threads by cutting into the wall for a precise fit
- works with heavy gauge sheet metal, aluminum, cast iron
- distributes clamping force over a larger bearing surface for durability