Malco® HW8X3/4ZT HW8X3/4ZT

Malco® Zip-in® Screws are known for their superior quality and is considered by many for being the best screw choice for HVAC metal duct fastening. A unique thread design and quality controlled manufacture spell the Zip-in® sheet metal screw difference. Zip-in® are made with a sophisticated heat treat process which 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® penetrating power. A second thread above the point engages after initial penetration and drills in the screw double fast. Malco® Zip-in® screws are faster driving, with a greater capacity for fastening heavier gauges of sheet metal than any other self-piercing type. For the best performance, use any Zip-in® Sheet Metal Screw with a Malco® C-RHEX® Cleanable, Reversible Dual Sided Hex Driver.

Malco® Self-Piercing Sheet Metal Screw, #8 Thread, Combination Lead Double Thread, 1/4 in Head, Hex Washer Head, 1/4 in Drive, Hex, Slotted Drive, 3/4 in Thread Length, Finish: Bright Zinc-Plated

• Undercut - indented hex washer slotted head
• 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
• 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

• Video Link https://youtu.be/qoDy2gVFTfk
• Warranty Information https://assets.unilogcorp.com/267/ITEM/DOC/Malco_CG10_Warranty_Information.pdf