Malco HW8X11/2ZW
•A unique thread design and quality controlled manufacture spell the Zip-in difference.
•Zip-in’s sophisticated heat treat process allows the screw to taper to a fine, sharp point without sacrificing critical point strength.
•Zip-in screws are faster driving, with a greater capacity for fastening heavier gauges of sheet metal than any other self-drilling type.
•Ultra sharp tapered point will not mushroom, break or walk.
•Undercut-indented hex washer slotted head always seats flush.
•Full 1/4 in. (No. 8) head will not strip out of hex driver opening at any-time during operation.
Malco HW8X11/2ZW Zip-In Self-Piercing Screws redefine metal fastenings with a purpose-built thread design and a precision heat-treat process. The proprietary Zip-In geometry tapers to a fine, sharp point while preserving core point strength, enabling clean, rapid penetration into sheet metal. A single starting thread forms down to the very tip, delivering an immediate bite, and a second thread above the point engages after initial penetration to drill in the screw double fast. The result is faster driving and a superior hold on heavier gauges of sheet metal—without the need for extensive pre-drilling.
- Advanced dual-thread action: one starting thread to the tip plus a second thread above the point ensures quick penetration and strong seat in fewer turns.
- Precision heat treatment: designed to maintain point strength while delivering a razor-sharp tip for consistent starts and reduced cam-out.
- Self-piercing efficiency: minimizes or eliminates pre-drilling, speeding up assemblies in metal roofing, ductwork, enclosures, and fabrication projects.
- Durable zinc plating: corrosion-resistant finish that holds up in everyday use and exposed metal environments.
- 1/4″ slotted hex washer head: compatible with common drivers, providing a secure seating and a clean, flush installation.
- Heavy-gauge capability: engineered to fasten thicker sheet metal more effectively than typical self-piercing screws.
- Bulk package: 4500-count pack ensures you have ample supply for larger jobs without frequent reorders.
Ideal applications and use cases
These Zip-In self-piercing screws are well-suited for HVAC ductwork, metal ceilings, wall panels, roofing projects, and general sheet-metal fabrication where quick, dependable fastening is essential. They excel in environments where corrosion resistance is a priority and where speed and strength matter—reducing installation time on assemblies that involve thicker gauge sheet metal. If you’re upgrading or repairing metal enclosures, equipment housings, or metal siding, Zip-In screws provide a clear efficiency advantage over traditional fasteners.
Why choose Zip-In over standard self-piercing screws?
The distinctive Zip-In thread arrangement and heat-treated tip translate to noticeably faster drive times, fewer misstarts, and a more consistent engagement in heavier gauges. The combination of a finely tapered point, a robust starting thread, and a second-thread engagement means you get reliable penetration and superior clamping force with fewer turns—a practical advantage on busy job sites and in high-volume production.
Specifications
Product: Malco HW8X11/2ZW Zip-In Self-Piercing Screws
- Length: 8 x 1-1/2 inches
- Head: Slotted Hex Washer
- Drive: Slotted with Hex Washer
- Finish: Zinc Plated
- Material: Self-piercing steel
- Quantity: 4500 screws per pack
- Applications: Sheet metal fastening, heavy-gauge metalwork, HVAC, ductwork, enclosures
Choose Zip-In for faster, more reliable sheet metal assembly where penetration power, thread-driven bite, and corrosion resistance matter most. This bulk pack keeps your workflow moving, so you can finish projects faster and with fewer interruptions.
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