Philips Pan Frame Head Self Drilling Screw a) Material: Carbon/Stailess Steel b) Dia: #6-#14(M3 ... drilling screws with washer for various sizes in "Self Drilling Screw".Specification Self Drilling ScrewMaterialCarbon Steel(1022,1018), SUS(302,304 ... /4''-6'')Thread CodeAB Type, A TypeHead CodeHex Head, Pan Head, Flat Head, Wafer Head, Truss Head, Pan Frame HeadDrive CodePhillips, Pozi, SlottedGrade4.8, ...