Building Roofing Tek Screws Rubber Washers 

he zinc-plated steel self-drilling screw has a sealing hex washer head with EPDM washer and a hex drive. Steel is often used in applications where strength is the primary consideration. The zinc plating offers corrosion resistance and has a reflective appearance. The sealing hex washer head has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the head for a screwdriver. The flange has an EPDM rubber washer bonded to the underside to resist leakage, loosening, and damage to the mating surface.  Self Drilling Screw SELF Tapping Screw Chipboard Screw Self Tek Screw Drywall Screw Hex Roofing Screw Finish:  zinc Material:   Steel, C1022A Measurement system:  inch metric Head Style:   hex Place of Origin:   handan city , China Brand Name:   JK Model Number:   4.8mm-6.3mm Standard:   DIN item:   roof…

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