Description
-Sealing self-piercing tapping screws made from heat treated C1022 steel
-Case hardened for roofing and siding applications.
-A 1/4" across flats high hat hex washer head with assembled EPDM washer offers easy driving and conforms to the metal surface for a secure and long-lasting seal.
-The twin lead type 17 point and hi-lo threads offer faster drive time and greater resistance to pullout.
-All screws are 1,000 hour salt spray test dacro coated.