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 ⑥ Roll Tap Series Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk JIS ① MHRZ Z-PRO   Roll Taps for Medium Hardness Carbon Steels ② Specification Coating 〜 ③ Recommended Tapping Speeds depending on Materials Medium carbon steels High carbon steels Alloy steels Thermal refined steels 中炭素鋼 高炭素鋼 合金鋼 調質鋼 10〜30 10〜30 10〜30 10〜20 ④ (m/min) (m/min) (m/min) (m/min)25〜35HRC Product Features ●Torque reduction is achieved from the new design and specifications. ●Tool life is dramatically improved with superb tool materials and coatings offering excellent wear resistance. ●Stable screw thread tapping in thermal refined material up to 35 HRC. ⑤ ●The MHRZ roll form taps can be used with water soluble cutting fluid. Preventing Benefits of Z-PRO ●A longer overall length dimensions enables a better supply of cutting fluid, resulting in excellent finish of interference internal threads. ⑥ Z-PRO dimensions JIS dimensions ⑦ ●Secures appropriate tool projection length to prevent interference with workpieces Preventing ⑧ interference ⑨ Tapping to a deep position ⑩ ⑪ Tapping to a JIS deep position ⑥-3