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 DIN ⑧ Pipe Tap Series Overall Thread Shank Shank Size of Length oflengthlengthlengthdia.squaresquareLℓℓsDsKℓk DIN ① EH-HT G Hand Taps for Parallel Pipe Threads, for Hard-to-Machine Materials ② Specification ■EH-HT G is the hand tap suitable for hard steels of 35-45HRC, such as forgings and thermal refined steels of high carbon steels and ③ alloy steels, and die steels. Recommended Tapping Speeds depending on Materials Thermal refined steels Tool steels 調質鋼 工具鋼 〜5 〜5 ④ (m/min) (m/min)35〜45HRC TYPE:1 ⑤ Segment:1H ⑥ Size Class Code Chamfer L(mm) ℓ (mm) ℓs(mm) Ds(mm) K(mm) ℓk(mm) No. offlutes TYPE For G Threads G 1/8-28 - TVG0020DCBC 2.5P 90 19 46 7 5.5 8 4 1 G 1/4-19 - TVG0040DCBC 2.5P 100 21 51 11 9 12 4 1 ⑦ G 3/8-19 - TVG0060DCBC 2.5P 100 21 51 12 9 12 4 1G 1/2-14-TVG0080DCBC2.5P125246416121541 ⑧ ⑨ ⑩ ⑪ DIN ⑧-55 ※ This product is different from JIS products in shape and dimensions, please be careful when using.