Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools JIS ② Spiral Fluted Tap Series for through hole Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk JIS ① HDISL Spiral Fluted Taps for Steels, for Dry Tapping and for Ultra High Speed Tapping, Through Hole Use (with LH Spiral Fluted) ② Specification Coating <2D ③ Recommended Tapping Speeds depending on Materials Medium carbon steels High carbon steels Alloy steels 中炭素鋼 高炭素鋼 合金鋼 20〜50 20〜50 20〜50 ④ (m/min) (m/min) (m/min) Product Features ● Ultra high-speed machining with mist or dry tapping machining are possible with a side coolant hole shape. ●The left hand spiral flute shape makes it the perfect tapping for ⑤ vertical or horizontal machining in carbon steel and alloy steel in through hole applications. Tapping Data Tapping Conditions [M12×1.25] Workpiece Material S55C tempered steel ⑥ Hole Shape Through holes HDISL Bored Hole Size φ10.75 Can Continue Tapping Length 18mm Conventional Product Tapping Speed 50m/min Machinery Type M/C machine (horizontal type) 0 500 1000 1500 2000 ⑦ Cutting Fluid Water soluble cutting fluidNumber of Holes Processed1,600 holes (Number of holes processed) Speed recommendation table ⑧ Slow Tapping Speed Fast Work piece 5m/min 10m/min 15m/min 20m/min 30m/min 50m/min Work piece Material Fully synchronous feed area Material Alloy SCM SCM Alloy Steel SCr SCr Steel ⑨ High High CarbonSteelS45C S45C CarbonSteel Medium S45C F-SL HDISL S45C Medium ⑩ CarbonSteelS30C PO +POLowS25C CarbonS30CSteelS25CLow Carbon Carbon Steel SS400 SS400 Steel 5m/min 10m/min 15m/min 20m/min 30m/min 50m/min ⑪ The above diagram is for the different materials shown. JIS ②-31