- Spiral Flute Tap - Thread Size: M8 x 1.25 + 0.03 - Square Size: 5 mm / 0.2 in - Design features: spiral groove for upward chip removal, enabling fast and accurate thread cutting - Finish: titanium coating provides excellent corrosion resistance, improves wear resistance and hardness, and reduces coefficient of friction - Applications and compatibility - Suitable for machining blind holes and sticky materials - Compatible with aluminium, tool steel, stainless steel, bronze, and plastics - Recommended feed speeds: - general steel: 6-15 m/min - harder steel: 5-10 m/min - stainless steel: 2-7 m/min - cast iron: 8-10 m/min - Caution: torque from too fast feed speed can cause tap breakage - Special design and enhancements - Enlarged tap design to fit workpieces that will be electroplated or sandblasted after tapping - Reinforcement 0.03-0.1 mm depending on coating thickness - Features high hardness, toughness, wear resistance, and heat resistance - Easy to use - Suitable for drilling and thread cutting machines, CNC, and milling machines - Use thread cutting oil for higher quality threads and longer-lasting taps - Recommended to use with machine tap drill and thread cutting pliers with overload protection