Modified Truss Head Self Drilling Screws a) Material: Stainless Steel b Dia: #6-#14(M3.5- ... '')Thread CodeAB Type, A TypeHead CodeHex Head, Pan Head, Flat Head, Wafer Head, Truss Head, Pan Frame HeadDrive CodePhillips, Pozi, SlottedFinishPlain, Zinc Plated, Black/Grey Phosphated, Nickel, Brass etc ...