... and Tapping Roofing ScrewsDIN7504K,SAE J78,ISO15480,ISO15481,ISO15482,ISO15483,Pan Framing Head Self Drilling Roofing Screws;DIN7504K,SAE J78,ISO15480,ISO15481 ... Tapping Roofing ScrewsDIN7504K,SAE J78,ISO15480,ISO15481,ISO15482,ISO15483,Hex Washer flange Self Drilling and Tapping Roofing ScrewsDIN7504K,SAE J78, ... ,SAE J78,ISO15480.ISO15481,ISO15482,ISO15483,Others series. Nylon Head Self Drilling Screw