Techfast Light Duty Sheet to Steel Roofing Screws | 5.5 X 25Mm | Elementech | Ba
Roofing Screws. Steel to Steel (For Light Section Purlins). Washered Self-Driller. Steel Sheet to Steel Purlin. Head: Hexagon Self-Drilling. TechFast screws for light section purlins will fix material to purlins between 1.2mm to 3.6mm.