Standard coarse thread, M3*0.5, M4*0.7, M5*0.8, M6*1.0, M8*1.25, M10*1.5, M12*1.75.
Spiral Point Taps with downward chip removal design, which is perfect for pre-drilling through hole tapping, it's not recommended use on blind hole tapping.
Made from high speed steel 6542, nitriding coating greatly improves heat resistant, hardness and wear resistanceand make the service life longer.
They are used to cut new threads or repair damaged threads, you will have a smooth tapping experience with them.
Suitable for low-carbon steel, thin stainless steel, aluminium and so on, not for high hardness material such as High-Carbon Steel, etc.
