Self-Drilling Screws Self-Drilling Screws, also known as tek screws, teks self-tapping screws provide secure fastening with strong holding power without the need to pre-drill. Material: Zinc Plated Carbon Steel, higher hardness, color zinc plated, enhancing the ability of anti-corrosion and anti-rust.Head Style: Hex Washer Head, can be easily installed with suitable hex driver. Self Drilling Screw SELF Tapping Screw Chipboard Screw Self Tek Screw Drywall Screw Hex roofing Finish: ZINC, Zinc plated Measurement system: Metric Product name: Hex Head Self Drilling Screw Surface: Zinc plated Keyword: Hex Head Self Drilling Screw Name: Hex Head Self Drilling Screw Customized support: OEM, ODM Tapping screws type: Hex Head Self Drilling Screw HEX WASHER HEAD APPLICATIONS . for medium duty purpose . roof deck to steel framing…