... SUS 3)Diameter:3.5mm~6.3mm,6#~14 Hex Head Self Drilling Roofing Screws 1)Standard: DIN, ASTM,AS ... Head Type:Pan Head,Flat Head,Hex Head,Bugle Head,Wafer Head,Truss Head7)Point Type:Sharp Point,drilling Point8)Drive Type:Phillips,Pozi,Combination9)Finish ... 410.304.316 and so onHead CodeCSK,pan head,truss head,hexagon head,round head,oval head in cross recessed,combined,torx,slottedThread Codefull thread ...