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Free Shipping on orders over $49A 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
Self-Piercing Screw, Hex Slotted Head, #7, 1/2 inch Thread Length, Case Hardened Steel, Bright Zinc Plated Finish, For Sheet Metal
