Malco HW8X1ZG
•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.
•Complete operator control with precise hole alignment.
•Combination lead double thread Instantly penetrates and engages in heavy gauge sheet metal and layered light gauge.
Meet Malco 8X1 Zip-In Self-Piercing Screws (HW8X1ZG) — a purpose-built fastener engineered to transform sheet metal installation. With Zip-In’s signature thread design and precision heat-treating, these screws deliver penetrating power and dependable strength in a single, clean motion.
What makes Zip-In different
- Single starting threadis formed all the way to the tip, creating a precise starting point that kickstarts penetration with minimal effort.
- Second thread above the pointengages after initial entry, effectively drilling in twice as fast and locking the metal securely as you drive.
- Advanced heat treat processsharpens the point into a fine, piercing tip without sacrificing point strength, so you can trust it to bite through tougher gauges of sheet metal.
- Faster driving, higher capacitythan traditional self-piercing screws, making it ideal for thicker metals where reliability matters.
Product specs at a glance
- Size: 8×1 (8 gauge, 1 inch length)
- Drive:slottedwith1/4 inchhex washer head for a secure, flush fit
- Finish: Zinc plated for corrosion resistance
- Quantity: 100 screws per pack
Ideal uses and scenarios
- Secure thicker sheet metal in roofing, flashing, ductwork, and metal enclosures where standard screws struggle to bite.
- HVAC installations that require a rapid, reliable fastener that maintains a tight seal over time.
- Fabrication projects involving overlapping joints or gateways where piercing power and driving speed matter most.
Why choose Zip-In over conventional self-piercing screws
- Better performance on heavier gauges without pre-drilling—reduces time on the job.
- Sharper point and doubled-thread progression mean cleaner starts and steadier progression through metal.
- Durable zinc finish protects against corrosion in exposed applications, extending the life of your installation.
Practical tips for best results
- Clean the work surface to prevent debris from obstructing the initial thread engagement.
- Apply steady, moderate torque to leverage the two-thread engagement without overdriving.
- Use in combination with compatible washers and mating metals to ensure a solid seal where weatherproofing is a concern.
Whether you’re upgrading a metal roof, assembling ductwork, or fabricating sturdy metal enclosures, Malco’s 8X1 Zip-In Self-Piercing Screws deliver fast, reliable penetration and strong, secure joints. Zinc-plated and designed for high-speed performance, this 100-count pack is ready to tackle professional-grade metalworking projects with confidence.
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