Hex head self drilling screw EPDM 

Hex washer head self driller with rubber metal beaked washer for metal roofing and siding. The rubber which has a wide range of application. This is the best rubber for metal building and siding applications to stop water from entering the building with long life spans. The rubber attached to these screws acts as a barrier preventing leaking from occurring near the screw head. These screws are designed to be driven with a wrench or socket for ease of installation. Self Drilling Screw SELF Tapping Screw Chipboard Screw Self Tek Screw Drywall Screw Hex roofing Screw  Self Drilling Screw SELF Tapping Screw Chipboard Screw Self Tek Screw Drywall Screw Hex Roofing Screw Finish:   ZINC, ZINC PLATED   Material:   Steel c1022 Measurement system:   INCH, Metric Head Style:   hexagon Place of Origin:   handan city , China Brand Name:   JK Standard:&nbs…