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HW8X1 1/2ZWT 250-PAK 1/4 HEAD SIZE WHITE DRILL SCREW
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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
Undercut-Indented Hex Washer Slotted Head - Undercut Always seats flush
Burr Free hex washer slotted head - One 1/4 inch hex driver accommodates all sizes of Zip-in Screws
Full 1/4 inch (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
Limited Lifetime Warranty