Hex Head Self Drilling Screw with EPDM washer 1)Diameter: 3.5mm~ ... )Length: 9.5~250mm, 3)hex self drilling scr Hex Head Self Drilling Screw with EPDM washer1)Standard: DIN, ASTM,AS ... /2"5)Thread: AB TYPE,A TYPE6)Head Type:Pan Head,Flat Head,Hex Head,Bugle Head,Wafer Head,Truss Head7)Point Type:Sharp Point,drilling Point8 ...