Hex Head Self Drilling Screw with EPDM washer 1)Diameter: 3.5mm~6.3mm, 6#~14# ... ~250mm, 3)hex self drilling scr Hex Head Self Drilling Screw with EPDM washer1)Standard: DIN, ASTM,AS,GB2)Material: Carbon Steel ... Head,Hex Head,Bugle Head,Wafer Head,Truss Head7)Point Type:Sharp Point,drilling Point8)Drive Type:Phillips,Pozi,Combination9)Finish: Plain ...