Inflation Beater Nu-Way El Torro Combination Roofing Screw With Nu-Way Seal. Groove Under Screw Head Gives Perfect Sealing. Concentric Seal Rings Stop Leaks. Tapered Seal Plugs Hole Completely. Galvanized Washer Ensures Overall Protection. Carbon Black Additive To Seal Resists Ultra-Violet. Deep Thread For Greater Grip; Galvanized For Maximum Corrosion Resistance. Shank Pilot Ensures Straight Entry Into Timber. Sharp Point Punches Hole Cleanly; Easily. Screw Diameter 6 mm; Available In 3 Lengths : 65mm; 75mm; 90mm. Packed In 1 Box Of 100 Units Each.
Used In Masonry Materials That Expand Once Inserted; Hole To Be Pre-Drilled M5 Uses 9mm Drill Bit; When Tightning The Bolt; Nut Is Pulled Into Shell; ..