Thread size: M4 x 0.7 + 0.03; square shank: 4 mm. Spiral point design for downward chip evacuation and fast, accurate tapping. Titanium coating provides excellent corrosion resistance, improves wear resistance and hardness, and reduces friction. Applications and performance - Suitable for through-threading on aluminum, steel, stainless steel, bronze, and plastics. - Recommended feed rates: general steel 6-15 m/min; harder steel 5-10 m/min; stainless steel 2-7 m/min; cast iron 8-10 m/min. - Note: too fast a feed increases torque and can cause the tap to break. Special design features - Oversize design to handle workpieces that will be galvanised or sandblasted after drilling. - Reinforcement typically 0.03-0.1 mm depending on coating thickness. - Material properties: high hardness and toughness, wear resistance, and heat resistance. Ease of use and compatibility - Suitable for drilling and tapping machines, CNC machines, and milling machines. - Use with thread cutting oil for higher quality threads and longer tool life. - For best results, use machine taps with collets that include overload protection.