Short product description:
Koelner self-drilling sheet metal screw B-SL-FS-3545 is a phosphate-coated fastener sized 3.5×45 mm supplied in a container pack. Designed for fastening thin sheet metal to metal substrates without pre-drilling, it features a self-drilling tip and corrosion-resistant phosphate finish. Suitable for construction, roofing, HVAC and metal fabrication applications.