Spiral flute machine taps,Din371 Din376, High speed steel,ground thread. Type of Thread: Metric ISO thread. Size: M3-M10. Spiral flute machine taps,Din371 Din376High speed steel,ground thread.Type of Thread: Metric ISO thread.Tap Tolerance:Class 2 for 6H fit.Flute Type:Spiral flute.Surface Treatment:Bright. Application:For machine tapping of through holes.Size: M3-M10. Spiral flute machine taps ...