Hex Self Drilling Screws 1.Material:carbon/stainless steel 2.Size:#6 #7 ... self drilling screw with tapping screws thread Standard:DIN 7504, ANSI/ASME B18.64, Hex washers self drilling screw,Washer Head Self-Drilling Screw ,Pan Framing,drywall screw of self drilling screw), Hex Head self drilling ... steel, 304, 316 (A2, A4), SS 18-8.Available Size:Screw: Dia.6#-14#, Length: 13mm-100mm (1/2"-4")Finishing ...