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. 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. Zip-In® screws are faster driving, with a greater capacity for fastening heavier gauges of sheet metal than any other self-piercing type.
Single starting thread machined down to very tip of screw point
Instantly penetrates and engages in heavy gauge sheet metal and layered light gauge
Undercut-indented hex washer slotted head
Zinc Plated
Burr Fee
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
Quality controlled heat treat
Sharp tapered point will not mushroom or break
No walking
Complete operator control - precise hole alignment
