uxcell Straight Flute Taps, M8 x 1.25 Metric Left Hand Titanium Coated M35 Cobalt High Speed Steel Machine Tapping Screw Thread Milling Tap Machinist Repair Threading Tool

Specifications:Thread Size: M8 x 1.25Thread Length: 23mm / 0.91"Square End Size: 5mm / 0.2"Total Length: 70mm / 2.76"Cutting Direction: Left HandMaterial: M35 Cobalt High Speed Steel (HSS-CO)Finish: Titanium CoatedNumbers of Flutes: 3 FlutesPackage Content: 1pcs x Straight Flute TapDescriptions:Straight flute design, downward chip removal. Left hand thread cutting, clear threads, fast tapping with accuracy. M35 Cobalt high speed steel tool features high hardness (HRC65-66), high red hardness, high wear resistance, good toughness.Suitable for processing through holes. Used for drilling and tapping stainless steel, aluminum, die steel, bronze, hard plastics, etc.. Recommended feed rate: general steel: 6-15m/min; harder steel: 5-10m/min; stainless steel: 2-7m/min; cast iron: 8-10m/min. The torque caused by too fast feed speed is too large, which can easily cause the tap to break Titanium coating provides excellent corrosion resistance, greatly improves wear resistance and hardness, and reduces the coefficient of friction. Use with tapping oil to get higher quality threads and more durable taps.Used on drilling and tapping machines, CNC and milling machines. Machine taps are suggested to be used with tap collets with overload protection. Hand use is easy to cause breakage to the tap due to uneven force. Taps are prone to chipping or breaking due to speed overload or non-vertical tapping. Use the correct tapping tools, such as tap wrench, tapping machine. Micro taps (such as M1-M3.5) are mainly used in clocks and watches, tapping wood and soft metals with lower hardness.