Meet Zip-In from Malco—the fast, fearless way to fasten sheet metal with precision and power.

These 8X11/2 Zip-In Self-Piercing Screws in a 1/4" Slotted Hex Washer Head finish (Zinc Plated) deliver a level of penetrating efficiency that stands apart from ordinary self-piercing hardware. The engineered thread geometry features a single starting thread run all the way to the tip, creating immediate bite, and a second thread above the point that engages after initial penetration to drive the screw in double-time. Result: cleaner starts, fewer cam-outs, and a more secure hold even in thicker sheets.

Key advantages:

• Advanced thread design for faster driving — the dual-thread action reduces insertion time and increases torque tolerance, especially on heavier gauges of sheet metal.
• Precision heat treatment — a sharp, tapered point that maintains strength from first contact to final seating, minimizing brittle points and improving long-term durability.
• 1/4" slotted hex washer head — compatible with standard power drivers and bit sets, ensuring a flush, clean finish.
• Zinc plating for durability — corrosion resistance that stands up to moisture, oils, and outdoor environments.
• Heavy-gauge capability — designed to handle thicker sheet metal more effectively than typical self-piercing screws, reducing the need for multiple passes.
• Economical, bulk pack — 2250-count ensures you’ve got plenty for large jobs, reducing project downtime and reordering frequency.
• Versatile applications — ideal for HVAC ductwork, metal roofing, enclosures, and general light fabrication where quick, secure assemblies are essential.

How to get the best results: align your sheets, apply steady pressure, and let the Zip-In action do the work. Because these screws pierce and thread in one motion, you’ll reduce installation time without sacrificing grip strength or seal integrity.

Malco HW8X11/2ZP—a dependable, high-performance solution that helps you finish jobs faster and with a cleaner, more professional look.