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.
Malco® Zip-In Self Piercing Screw, #7 Thread, 3 in OAL, Indented Hexagonal Washer Head, 1/4 in Drive, Slotted Drive, 1/2 in L Thread, Steel, Bright Zinc-Plated
Thread Size | : | #7 |
Overall Length | : | 3 in |
Head Type | : | Indented Hexagonal Washer |
Drive Size | : | 1/4 in |
Drive Type | : | Slotted |
Thread Length | : | 1/2 in |
Material | : | Steel |
Finish | : | Bright Zinc-Plated |