... ),pan,truss,hex,hex washer,hex flange,oval 1: Product information of Self Drilling Screws DiameterST2.9-ST6.3 #4-#14Length6.5mm ... so onHead Type & Drive TypeCSK(flat) head,pan head,truss head,hexagon head,round head,oval head cross recessed,combined,torx,slotted,squareThread Codefull thread,half thread,or ...