... price 3,Prompt delivery, and transportation safet 1,Standard:EN ISO 15480 (DIN7504);2,Length:13mm~ ... 3.5mm~6.3mm(#6~#14) 4,Points:PT.1~PT.55,Surface finish:---a) White,yellow or ... 15480, ISO 15481, ISO 15482, ISO 15483,Bi-Metal Self Drilling and Tapping Roofing Screws;DIN7504K,SAE J78, ... 15480, ISO 15481, ISO 15482, ISO 15483,Hex Washer Head Self Drilling and Tapping Roofing Screws;DIN7504K,SAE ...