Dura-SSL Generic Zinc Plated Steel Roofng Screws(#12x1), 200 Pack, Hex Head Self Tapping Screws with EPDM Washer for Metal to Metal, Sheet Metal Roof Screw

Specification: Material: Carbon Steel Color:Silver Tone Thread Dia.: #12 (5.5mm) Length(not include hex head): 1";(25mm) Thread Pitch: 1.8mm Hex Head Size: 8x5.4mm / 0.31"; x 0.21";(WxT) Flange Dia.: 11mm / 0.43"; Washer Size: 16 x 3.5mm / 0.63"; x 0.14";(D*T) Package Content: 200Pcs x Self Drilling Screws

• #12 Thread (5.5mm) x 1" (25mm) Length: Features an 11mm flange & 8x5.4mm hex head for secure fastening.
• Leak-Proof Seal: Flange head with bonded EPDM rubber washer creates a watertight seal, preventing leaks and loosening.
• Heavy-Duty & Weather-Resistant: Zinc-plated carbon steel construction resists corrosion. EPDM washer is wear & oxidation resistant.
• Fast Self-Drilling Installation: Drills pilot hole and taps threads in one step. No pre-drilling needed – use with a power driver.
• Versatile Metal Roofing Screw: Ideal for 1.75-5.25mm plate thickness in metal-to-metal/metal-to-wood applications (roofing, steel studs, etc.).