10 Pcs M4 x 0.7 4mm High Speed Steel Machine Screw Coarse Thread Metric Taps

Description:Suitable for repairing and machinery where metric threads are specified.Straight 3 flutes are ground to provide rapid chip removal for efficient threading.High-speed steel metric taps are with high hardness and toughness for wear resistance, well suited for general purpose applications.The thread tap can make new threads or re-thread damaged or jammed threads. Uncoated taps feature just the base substrate without any additional coatings, and fit a wide range of applications.Suitable for processing through holes or shallow holes on most metals, iron plate, copper, zinc, alloy steel, abrasive steel, A3 steel, stainless steel, etc.. Add appropriate tapping oil for higher quality internal threads and more durable taps.

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