... Torx Self Drilling Screws a) Material:Carbon Steel b) Dia: #6-#14(M3.5-M6.3) c) OEM OK Self Drilling ... 48MM8 mm steel to steel#512MMHeavy duty steel to steel#6>12MMCustomized for thicker application Specification Self Drilling ScrewMaterialCarbon Steel( ... Head, Truss Head, Pan Frame HeadDrive CodePhillips, Pozi, SlottedGrade4.8, 6.8, 8.8FinishPlain, Zinc Plated, Black/Grey Phosphated, Nickel, ...