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.
- 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.
- Zip-in®screws are faster driving, with a greater capacity for fastening heavier gauges of sheet metal than any other self-drilling type.
- Ultra sharp tapered point will not mushroom, break or walk.
- Head size: 1/4" Hex Slotted
