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- Malco™ Drill-in screws, type A, are designed with a single thread. These screws have a 5/16 in. slotted hex head and are zinc plated. These screws are available in longer lengths and multiple piece quantities.
Malco® Drill-In Screw, Self-Piercing, #12, 3 in Overall Length, Hex Washer, Slotted Drive, Steel, Zinc Plated, Sharp Tapered Point, 1/4 in Head, Single, 2 in Thread Length
- Type A single thread
- Indented 5/16 in hex washer, slotted head
- Undercut - indented hex washer slotted head
- Burr Free hex washer slotted head
- Undercut, always seats flush
- 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
- Trademarked and patented head markings indicate one and only genuine Zip-In®
- Quality controlled heat treat
- Sharp tapered point will not mushroom, break or walk
- Complete operator control, precise hole alignment
- Diameter - Thread Size#12Drive TypeSlottedFinishZinc PlatedMaterialSteelOverall Length3 inPoint TypeSharp TaperedHead Size1/4Head TypeHex WasherManufacturerMalco ProductsManufacturer #HW12X2XThread Length2Thread TypeSingleTypeSelf-Piercing