Malco 10X1 Zip-in Self-Piercing Sheet Metal Screws, 1/4″ Slotted Hex Head with Undercut Washer, Self-Tapping Fasteners (100, 1″ Length)

Malco HW10X1ZG
•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.

Meet Malco Zip-In HW10X1ZG—the 10×1 self-piercing sheet metal screw engineered for fast, reliable assemblies. Designed to deliver penetrating power from the first bite, this screw combines a precision thread layout with a controlled heat-treat process to outperform standard self-piercing fasteners in thicker gauges.

What makes Zip-In stand out? A unique two-thread approach that starts with a single, full-length thread that runs right to the tip, creating immediate penetration. As soon as initial bite occurs, a second thread above the point engages to drive the screw in with double-fast capability. The result is quicker drive times, fewer passes, and a stronger hold—even in heavier sheet metal.

• Penetration you can feel:The integrated starting thread and sharp point ensure rapid entry, reducing driver effort and pre-drilling needs.
• Rugged, precision heat-treatment:Point strength is preserved while the tip remains exceptionally sharp for consistent starts across runs.
• Self-piercing and self-tapping:Cuts and threads in one motion, streamlining installations on panels, enclosures, and metal assemblies.
• Secure, flush finish:1/4″ slotted hex head paired with an undercut washer provides a clean, tight seal and a stable seating surface.
• Heavy-gauge efficiency:Specifically optimized to fasten thicker sheet metal more effectively than other self-piercing options, expanding project capability.
• Reliable in volume:Sold in a practical 100-count package for mid-size jobs, with consistent performance across the batch.

Ideal for automotive panels, HVAC ductwork, metal roofing, and equipment enclosures, the Zip-In screws keep projects moving quickly—from initial fit to final seal. They pair readily with standard power drivers, delivering steady torque and dependable seating without the guesswork of pre-drilled holes.

Practical tips for best results

Use a controlled driving speed with a compatible driver to maximize the effectiveness of the dual-thread design. Align the fastener perpendicular to the sheet, allowing the self-piercing action to work cleanly. For especially thick or hard metals, consider starting with a light pilot hole to guide the initial bite, then finish with Zip-In for a tight, secure joint.