
⑥ Roll Tap Series Overall length L Thread length ℓ Thread + Neck length ℓn Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS MHRZ Spiral Fluted Taps (for blind hole) ① JIS Z-PRO Roll Taps for Medium Hardness Carbon Steels Spiral Fluted Taps (for through hole) ② Specification Coating 〜 Spiral Pointed Taps (for through hole) 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 〜 〜 〜 〜 Hand Taps ( m / min ) ( m / min ) ( m / min ) ( m / min ) ④ 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. Cemented Carbide Taps ⑤ ●The MHRZ roll form taps can be used with water soluble cutting fluid. Preventing interference Benefits of Z-PRO dimensions ●A longer overall length enables a better supply of cutting fluid, resulting in excellent finish of internal threads. Roll Taps ⑥ Z-PRO dimensions JIS dimensions Special Thread Taps Simple Inspection Tools ⑦ ●Secures appropriate tool projection length to prevent interference with workpieces Preventing Pipe Taps interference ⑧ Thread Mills Premium Thread Mills Tapping to a ⑨ deep position Dies ⑩ Center Drills Centering Tools ⑪ Tapping to a ⑥-3 JIS deep position