This 12-14 x 20mm self-drilling screw features a coarse thread and 5/16″ hex washer head for fast, reliable fixing to metal sections. The Class 4 corrosion-resistant coating is engineered for harsh external environments, helping extend service life on roofing, cladding and general metal fabrication. A sharp drill point and consistent thread form deliver rapid penetration and strong holding power.

• Class 4 coating for external durability,5/16″ hex head for positive drive

$6.52

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