Teks roofing screws provide secure metal-to-wood fastening with strong holding power, without the need to pre-drill. Sharp self-piercing point is ideal for fastening corrugated roofing panels to wood structures. Self-sealing neoprene washer provides a waterproof seal and a premium finish provides exceptional corrosion resistance in harsh outdoor environments. Installs with a standard screw gun and a 1/4 in. hex drive bit.