Chenlai Standard Parts is a professional Roofing Self Drilling Screw manufacturer and supplier in china. Roofing Screws are mostly made with a Hex Washer Head. Self Drilling Screw paired up with an EPDM rubber washer, bonding washer, or umbrella washer. And color painted on the head to match the color of the sheet metal. 

Roofing Self Drilling Screws provides exceptional corrosion resistance especially when fastening roofing panels to metal structures. The engineered drilling-point and flute remove material efficiently and properly size the hole for threads. They are ideal for attaching roofing and wall panels to steel framing.

Roofing Self Drilling Screw Product Parameters:

Material: Carbon Steel/ Stainless Steel

Norm : DIN7504K

Head Type: Hex Head

Grade : 1022 Case Harden

Surface :  Phosphated, Zinc Plated, Dacromet, Ruspert, Hop Galvanized, nickel plated, Zinc-nickel plated

DIA : 3.5 mm - 6.3 mm

LENGTH : 13 mm - 300 mm

Package :Bulk, Small box, Plastic box, according to clients request

Lead Time: 30-45days