Malco 8X1 Zip-In Self-Piercing Screws | 1/4" Slotted Hex Washer Head Sheet Metal Screws | Fast & Easy Piercing | Zinc Plated (3500 Count) Diameter:#8 1/4-Inch Diameter: Perfect size for

1/4-Inch Diameter: Perfect size for a variety of applications

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37/16 is fire rated for use on both sides of the wall

Malco 8X1 Zip-In Self-Piercing Screws | 1/4" Slotted Hex Washer Head Sheet Metal Screws | Fast & Easy Piercing | Zinc Plated (3500 Count) Diameter:#8 1/4-Inch Diameter: Perfect size forMeet the Malco Zip In 8X1 Self Piercing Screws a purpose built solution for fast, reliable sheet metal fastening. This 3500 count zinc plated box pairs a precisely engineered drive with a powerful piercing action, making it the smart choice for professional contractors and serious DIYers alike. The Zip In advantage starts with its unique thread design and a rigorous heat treat process. The screw tapers to a fine, sharp point without sacrificing point