Star ( Torx) head with nibs, coarse thread, type-17 zinc yellow. The Zinc Yellow coating prevents the oxidation of steel by forming a protective barrier. Yellow Zinc coating exceeds 180/hr. salt spray resistance. .0003 plating thickness. Star Drive prevents cam out and stripping for improved driveability. Type ‘17’ reduces wood splitting and eliminates the need for pre-drilling. Nibs under head provide flush finish. Used in low corrosion applications Application: For interior or outdoor applications. Attaches wood to wood.  90/hr. salt spray resistance. Used in low corrosion applications. Installation: A standard screw gun with torque limiting nose piece set at a maximum of 3000 RPM drive speed recommended. Use a T-20 Star drive bit. Do not over torque as it can cause the head to snap or damage to the work surface. Specifications: • Meets ASTM1 A 510 for carbon steel manufacturing • Product meets ASTM B-117 for salt spray corrosion testing