Spiral Fluted Tap Series Spiral Fluted Taps (for blind hole) MHSL Spiral Fluted Taps for Carbon Steels of middle hardness, Through Hole Use(with LH spiral flutes) Spiral Fluted Taps (for through hole) Specification Coating Spiral Pointed Taps (for through hole) Recommended Tapping Speeds depending on Materials Medium alloy steel and High alloy steel heat treated steel IS P IS P 10〜20 10〜20 (m/min) (m/min) Hand Taps For icon explanation, refer to P.50 Product features ●Most suitable for forged and thermal refined high carbon steels (C48 ~ C55) with 20 ~ 30 HRC hardness. ●MHSL ensures long tool life by adopting HSS-Co material of high wear resistance and special coating. Cemented Carbide Taps ●Adopting proprietary flute design, MHSL ensures consistent chip ejection in the area of middle tapping speed, and improves surface roughness of internal threads. Tapping data Roll Taps Tapping condition(M12×1.25) Tapping resul(t number of holes) Work material C53 (forged) / Hub bearing Tapping speed 30m/min MHSL Hole size φ10.8mm Tapping length 12mm, through hole Competitor's Special Thread Taps Simple Inspection Tools Machine Horizontal machining center Spiral Pointed (Synchronized feed) Tap Tapping fluid Water soluble oil 0 500 1000 1500 2000 2500 3000 Number of holes Pipe Taps 【Smooth chip ejection】 LH SP (Coated) MHSL 2 Step taper grooves to improve chip ejection Thread Mills Dies MHSL smoothly pushes out chips. 【Internal Threads】 Center Drills Centering Tools LH SP (Coated) MHSL Obtainable from Video site shown in right DIN SL-3 104