Metric Spiral Flute Tap: M2 x 0.4 metric thread, H2 tolerance, right hand thread cutting. Spiral flutes are fully ground to provide upward chip removal, with clear threads and cutting edges. Flutes on the screw tap help to remove chips and debris from the hole. 6542 (M2) High Speed Steel: Designed for high-speed operation, generating threads quickly and efficiently, offering high hardness, wear resistance, and good toughness. Nitride coating increases hardness, enhances wear resistance, and reduces friction for longer service life, resulting in smoother, faster tapping performance. Applications: Suitable for processing blind holes and sticky materials. Can be used for tapping stainless steel, aluminum, alloy steel, carbon steel, cast iron, non-ferrous metals, and hard plastics. Machine Tap: Suitable for use with drill presses, tapping machines, CNC machines, and milling machines. Use with tapping oil to achieve higher quality threads and extend tool life. Adjust speed according to material hardnesshigher hardness requires slower speed. Tips: Machine taps are recommended for use with tap chucks that have overload protection. Not recommended for hand tapping or use with electric drills. Maintain a 90-degree vertical angle during tapping and ensure stable alignment. Do not exceed a tapping depth of 1.5 times the tap diameter. Color: As shown. Material: Steel. Package Contents: 4 x Taps. Only the items listed are included; other products are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.