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- 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® Sheet Metal Screw, Self-Piercing, Measurement System: Imperial, #10, Hex Washer, Slotted Drive, Zinc Plated, 1/4 in Head, Double, 1 in Thread Length
- Undercut - indented hex washer slotted head
- Bright zinc plated
- Burr free
- Full 1/4 in (No 8) head will not strip out of hex driver opening
- One 1/4 in hex driver accommodates all sizes
- Undercut - always seats flush
- Some screws sizes available in pails
- Trademarked and patented head markings indicate one and only genuine zip-ins
- Combination lead double thread design single starting thread machined down to very tip of screw point, Instantly penetrates and engages in heavy gauge sheet metal and layered light gauge
- Consistent hard point quality controlled heat treat
- Sharp tapered point will not mushroom or break
- No walking
- Diameter - Thread Size#10Drive TypeSlottedFinishZinc PlatedMeasurement SystemImperialHead Size1/4Head TypeHex WasherManufacturerMalco ProductsManufacturer #HW10X1ZTThread Length1Thread TypeDoubleTypeSelf-Piercing