Sourcingmap 10 Pcs M4 x 0.7 4mm High Speed Steel Machine Screw Coarse Thread Metric Taps Tapping Threading Machinist Repair DIY Tool

• 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.
• Straight flute design, rapid downward chip removal for efficient threading, clear threads without burrs, right hand tapping direction. Good for processing through holes or shallow holes
• Machine taps used with drilling machines, tapping machines, automatic machines, machining centers, CNC, milling machines, not recommended for hand and electric drill tapping. Recommended feed speed: ordinary steel: 6-15m/min; harder steel material: 5-10m/min; stainless steel: 2-7m/min; cast iron: 8-10m/min.

Suitable for repairing and machinery where metric threads are specified. Straight 3 flutes are ground to provide rapid chip removal for efficient threading.