Philips Pan Frame Head Self Drilling Screw a) Material: Carbon/Stailess Steel b) Dia: #6-#14 ... Steel or aluminium. with See our self-drilling screws with washer for various sizes in "Self Drilling Screw".Specification Self Drilling ScrewMaterialCarbon Steel(1022,1018), SUS( ... SlottedGrade4.8, 6.8, 8.8, 10.9, 12.9FinishPlain, Zinc Plated, Black/Grey Phosphated, Nickel, Brass etc.StandardGB, DIN, ANSI, ...