BDN FASTENERS Polycarbonate Skylight Screws #12×2-3/8"(12-14x60mm) , Hex Flange Head, Self-Drilling Screw for Metal, 50pcs

BDN FASTENERS Polycarbonate Skylight Screws #12×2-3/8"(12-14x60mm) , Hex Flange Head, Self-Drilling Screw for Metal, 50pcs

• Save 50% of construction time: Accurate drilling, locking, and sealing in one go without pre-drilling, forming a perfectly round hole.
• Built-in sawtooth cutting device: The Expansion Hole Cutter has a sawtooth to quickly create an 11mm expansion hole during driving, eliminating the need for a separate pre-drilling of the expansion hole.
• Structural buffering design: The buffer design of the Depth Stop Knurls and the Expansion Hole Cutter prevents excessive driving, thereby avoiding squeezing and damaging the board, ensuring the safety and stability of the operation.
• Superior weather resistance: Equipped with BAZ dome EPDM washers, providing resistance to strong winds and weather (UV/Ozone/Acid Rain), ensuring the complete sealing of expansion holes.
• For fixing polycarbonate sheets to steel substrates only. Drilling Capacity - Max. 4.5mm thick steel substrates. Corrosion Resistance - True Australian Standard Class 4 Coating (C4) *Please refer to our corrosion warranty.