Tek Screw Steel T3 5.5x90mm - Self-tapping steel screw engineered for rapid fastening in metal and composite substrates. The T3 thread pattern delivers superior holding power with minimal pre-drilling requirements, making it ideal for roofing, cladding, and structural assembly applications. Hardened steel construction ensures durability and corrosion resistance in demanding industrial environments. Supplied in bulk quantities of 100 units for cost-effective project deployment.