6.3 x 22mm Stitcher Self Drilling Tek Screw With 16mm Bonded Washer Roofing Clad
Tek Screw Adapter Size: 8mm (5/16"). Screw Length (from under head): 22mm. Corrosion Resistance: Zinc-plated finish protects against rust and corrosion, extending the lifespan of the screw.