Roofing Screws are mostly made with a Hex Washer Head Self Drilling Screw paired up with an EPDM rubber washer, bonding washer, or umbrella washer. And color painted on the head to match the color of the sheet metal. Hisener can match the color required to the RAL to create the color that you need.
Production Range /
DIA : 4.2 mm - 6.3 mm (#8 - #14)
LENGTH : 13 mm - 200 mm (1/2” - 8”)
13th Floor, Tower B, Jinhui Building, 486 South HaiChang Road, Haining, Zhejiang, China