Uxcell 4 Packs M8 x 1.25 H2 High Speed Steel Straight Flutes Metric Machine Screw Thread Taps

1. Straight flutes are ground to provide rapid downward chip removal for efficient threading. Clear threads without burrs right hand tapping direction. Good for processing through holes0r shallow holes. The thread tap can make new threads or re-thread damaged or jammed threads. 2. The metric taps are suitable for most metals iron plate copper zinc alloy steel abrasive steel A3 steel stainless steel etc.. Add proper tapping oil for higher quality internal threads and more durable taps. 3. High-speed steel taps have high hardness and toughness for wear resistance. Uncoated taps feature just the base substrate without any additional coatings and fit a wide range of applications. 4. Machine taps are used with tapping machines drilling machines milling machines CNC. Recommended feed speed:0rdinary steel: 6-15m/min; harder steel material: 5-10m/min; stainless steel: 2-7m/min; cast iron: 8-10m/min. NOT recommended for hand and electric drill tapping. Tips: 1. Control speed according to material hardness. The higher the hardness the slower the speed. Fast speed with small torque; slow speed with high torque. The force must be uniform in tapping operations. 2. Drill the holes with a twist drill bit first then tap with a thread tap. The tapping angle should be 90 degrees vertical and stable. 3. The tapping depth should not exceed 1.5 times the diameter of the tap (for example the diameter M5x0.8 is about 5mm and the depth should not exceed 7.5mm.)