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.
California residents: see Proposition 65 Warning
Weight 2.49 Pounds (Lb) Width 4.5 Inches (In) Height 5.25 Inches (In) Country of Origin JPN Length 4.5 Inches (In) Brand Malco Head Type Hex/Slotted Application HVAC Color Black Composition Zinc Plated Finish Heat Treat Overall Length 4.5" Package Quantity 500 SAE or Metric SAE Size 8 x 1 Warranty Offered Yes Screw Length 1" Screw Size #8