Meet the Malco Zip-In 10X1 Self-Piercing Sheet Metal Screws—the fast, reliable solution for attaching heavier gauge sheet metal without pre-drilling. Equipped with a 1/4" slotted hex head and an undercut washer, these self-tapping fasteners are engineered to bite cleanly, clamp securely, and stand up to demanding fabrication tasks.

What sets Zip-In apart

• Innovative thread design: A single starting thread forms down to the very tip, delivering immediate penetrating power straight from the drive.
• Dual-thread action: After initial penetration, a second thread above the point engages to drill in the screw with a “double fast” effect, optimizing holding power as you work.
• Precision heat treatment: The advanced heat-treat process tapers the point to a fine, sharp tip without sacrificing core strength for reliable performance every time.
• Self-piercing and self-tapping: Designed to pierce and thread in a single motion, reducing installation time and fatigue on longer projects.
• Undercut washer support: The undercut washer distributes load and helps seal, contributing to a tighter, more durable connection.

Why this matters for your project

If you’re fastening heavier gauges of sheet metal, standard screws can struggle to start, wander, or wear out the tip. Malco Zip-In screws are engineered to deliver faster driving and greater fastening capacity, so you can complete assemblies with fewer passes and less frustration. The 1/4" slotted hex head provides solid engagement with common drivers, while the 1" length ensures adequate bite in thicker materials, all in a convenient 500‑count package.

Ideal applications and use cases

• HVAC ductwork and metal enclosures where a tight, robust join is essential.
• Automotive or appliance sheet-metal assemblies that require dependable self-piercing performance.
• Fabrication projects involving multiple metal gauges where speed and consistency matter.

Specifications at a glance

• Product: Malco Zip-In 10X1 Self-Piercing Sheet Metal Screws
• Head: 1/4" slotted hex
• Length: 1"
• Threading: Self-piercing, self-tapping with dual-thread engagement
• Washer: Undercut washer for improved load distribution
• Count: 500 pieces per package

When your project hinges on fast, reliable metal-to-metal fastening, the Malco Zip-In 10X1 screws deliver penetrating power, strong grip, and streamlined installation. Designed to outperform typical self-piercing fasteners, they’re an investment in speed, consistency, and long-term performance for any sheet metal job.