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Look for the Dots! ® Trademarked & Patented Head Markings indicate one and only genuine Zip-ins



U.S. Patent No.




Sheet Metal Screws

The Standard by which all others are judged.

A unique thread design and quality controlled

manufacture spell the Zip-in



Rated #1, Zip-in® screws are

the best selling sheet metal

screws worldwide.



sophisticated heat treat process allows the screw

to taper to a fine, sharp point without sacrificing critical

point strength. A single starting thread


is machined

down to the very tip of the point and is the source of



penetrating power. The second thread


above the point engages after initial penetration and

moves the screw through very fast. Zip-in



are faster driving, with a greater capacity for

fastening heavier gauges of sheet metal than any

other self-drilling type.




Undercut-Indented Hex Washer Slotter Head


Burr Free hex washer slotted head

• Undercut - Always seats flush

• One 1/4 in. hex driver accomodates all sizes of Zip-in Screws

• Full 1/4 in. (No. 8) head will not strip out of hex driver opening

at any-time during operation.


Combination Lead Double Thread

• Starting thread machined down to very tip of screw point

• Instantly penetrates and engages in heavy gauge

sheet metal and layered light gauge


Sharp Tapered Point

• Quality controlled heat treat

• Sharp tapered point will not mushroom, break or walk

• Complete operator control with precise hole alignment.


Combination Lead

Double Thread



Ultra Sharp Tapered Point

Scan the QR Code or go to

Zinc Plated

Malco Products Inc. Est. 1950



Hex Washer

Slotted Head