Hex Head Tek Screws for Heavy Steel Section 4.0mm to 12.5mm with Bonded EPDM Washer in Evoshield®
            
            
	      Identical to the heavier duty standard hex headed self drilling screw or tek screw, tek 5, with the addition 
of the integrated EPDM washer for situations where a waterproof seal is required. For attaching to heavy 
steel section of thickness between 4.0mm and 12.5mm.