T17 Hex Head 12-11x25-50 Z/Y

Product Overview
This product is a T17 cutting-point hexagon flange self-tapping screw, manufactured from carbon steel, quenched and hardened, with a color zinc passivation treatment. The integrated hexagon flange head, combined with the T17 wood-cutting point featuring chip evacuation grooves, is specifically designed for composite fastening of color-coated steel sheets and timber. It delivers a balanced combination of installation efficiency, fastening strength, and rust resistance, making it a cost-effective general-purpose fastener for construction and woodworking.

Product Applications
Roofing projects: Fixing color-coated steel sheets and polycarbonate panels to timber purlins, and factory shed roof construction;
Timber structure engineering: Assembly of wooden houses, preservative-treated timber boardwalks, fences, pergolas, and timber frames;
Decoration and renovation: Ceiling timber joist installation, wood-based panel substrates, and metal trim fixing around doors and windows;
Outdoor construction: Garden trellises and timber decks in general environments; for coastal high-salt-spray scenarios, stainless steel variants are recommended.