Zip-in® Self Piercing Sheet Metal Screws

Malco’s Zip-in® Screws are known for their superior quality and is considered by many for being the best screw choice for HVAC metal duct fastening.

A unique thread design and quality controlled manufacture spell the Zip-in® sheet metal screw difference. Zip-in’s® are made with a sophisticated heat treat process which allows the screw to taper to a fine, sharp point without sacrificing critical point strength. A single starting thread is formed down to the very tip of the point and is the source of Zip-in’s® penetrating power. A second thread above the point engages after initial penetration and drills in the screw double fast. Malco’s Zip-in® screws are faster driving, with a greater capacity for fastening heavier gauges of sheet metal than any other self-piercing type.

For the best performance, use any Zip-in® Sheet Metal Screw with a Malco C-RHEX™ Cleanable, Reversible Dual Sided Hex Driver.

C-RHEX Zip-In and Bit-Tip

Rated #1, Zip-in® Screws are the Best Selling Sheet Metal Screw Worldwide.


  • Undercut-indented hex washer slotted head
  • Bright Zinc Plated
  • Burr Free
  • Full 1/4″ (no. 8) head will not strip out of hex driver opening
  • One 1/4″ hex driver accommodates all sizes
  • Undercut – always seats flush
  • Some screws sizes available in pails.
  • ® Trademarked & Patented Head Markings indicate one and only genuine Zip-ins. U.S. Patent No. D524,638

Combination Lead Double Thread Design

  • Single starting thread machined down to very tip of screw point.
  • Instantly penetrates and engages in heavy gauge sheet metal and layered light gauge.

Consistent Hard Point

  • Quality controlled heat treat
  • Sharp tapered point will not mushroom or break
  • No walking


White Painted Screws

Catalog # Head size Package Size Available
HW8x1-1/2ZW 1/4 in. Bags, Tubs, Bulks
HW8x2ZW 1/4 in. Bags, Tubs, Bulks
HW8x3ZW 1/4 in. Bags, Tubs, Bulks


Consult Malco Suggested Trade Prices for specific package quantities available for each screw size. Count on Malco for full, accurate piece counts in every ZIP-In package you buy.



My Review for Zip-in® Self Piercing Sheet Metal Screws

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Gary Kirkendall

The very best screws in the industry

I have been in the industry for over 30 years, as far as I know I have used zip in screws from Malco every since I started in the trade. In the past 23 years I have owned my own business, I have tried other screws and always come back to Malco. Visit me