Malco 8X11/2 Zip-In Self-Piercing Screws | 1/4" Slotted Hex Washer Head Sheet Metal Screws | Fast & Easy Piercing | Zinc Plated (4500 Count) Diameter:#8 Durable Construction: The heat-treated carbon-steel

Durable Construction: The heat-treated carbon-steel cutting threads guarantee outstanding undercutting ability

With a cutter diameter of 1/4" and a length of cut measuring 7/32"

and metal fabrication

191 square shank that provides enhanced grip and stability

Malco 8X11/2 Zip-In Self-Piercing Screws | 1/4" Slotted Hex Washer Head Sheet Metal Screws | Fast & Easy Piercing | Zinc Plated (4500 Count) Diameter:#8 Durable Construction: The heat-treated carbon-steelDesigned for rapid, reliable metal fastening, Malco Zip In 8 x 1 1 2 Self Piercing Screws deliver piercing power with minimal effort. The zinc plated finish resists rust, making them ideal for outdoor and humid environments, and the 4500 count pack keeps large projects moving without interruption. These screws are purpose built for sheet metal work where speed and accuracy matter, from roofing and flashing to ductwork and metal siding. Penetrating