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.
Undercut-indented hex washer slotted head
Bright Zinc Plated
Burr Fee
Full 1/4" (no 7) head will not strip out of hex driver opening
One 1/4" hex driver accommodates all sizes
Undercut - always seats flush
Single starting thread machined down to very tip of screw point
Instantly penetrates and engages in heavy gauge sheet metal and layered light gauge
Quality controlled heat treat
Sharp tapered point will not mushroom or break
No walking
Complete operator control - precise hole alignment
