Teks 21404 Roofing Screw, #9 Thread, Coarse Thread, Hex Drive, Sharp Point, Steel, Zinc, 100 PK

Self-sealing neoprene washer for waterproof applications. Premium finish provides exceptional corrosion-resistance in harsh outdoor environments. For metal-to-metal (26 to 22 ga) or metal-to-wood applications. Applications - attaching roofing and wall panels to steel framing, roofing panels over insulation to wood structure, pole barn construction.