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 ④ Hand Tap Series Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk JIS ① EH-HT Hand Taps for Hard-to-Machine Materials ② Specification ③ 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 Product Features ●The EH-HT tap is suitable for tapping high hardness material from 35 to 45 HRC like high carbon steel, alloy steel forging, thermal refined material and metal mold material. ⑤ ●T ool life was greatly improved by utilizing a cutting edge shape suitable for difficult cutting materials . The EH-HT taps exhibit an excellent wear resistance.●There are two chamfer types available, 2.5P for blind hole and 5P for through hole. Tapping Data Tapping conditions [M6×1 P3] Tap Used EH-HT M6×1 5P ⑥ Workpiece Material SCM440/GearBored Holeφ5 EH-HT Can Continue Tapping Length 10mm through hole Tapping Speed 9m/min HT Machinery Type CNC vertical machining center (asynchronous) 0 100 200 300 400 500 600 ⑦ Holder Type With tension compressionTappingFluidInsoluble cutting fluid (Number of holes tapped) Holes Tapped 500 holes (can continue tapping) Product System Table ⑧ Slow Tapping Speed Fast 1m/min 3m/min 5m/min 10m/min 15m/min Work piece Material Work piece Material 60HRC 60HRC UH-CT ※Please use UH-CT and ⑨ High 55HRCHardnessMaterials55HRC EH-CT with machine with 55HRC HighEH-CTperfect synchronous feed.55HRCHardnessMaterials 45HRC 45HRC Tempered 45HRC 45HRC Tempered Material 25HRC⑩Tool &AlloySteelSKS・SKDSCM・SCr EH-HTEH-PO HC+SP 25HRC MaterialSKS・SKDSCM・SCrTool &AlloySteel High HC - SP High CarbonSteel S45C⑪MediumS45CCarbon HC+POHC -PO S45C CarbonSteelS45CMediumCarbon Steel S30C S30C Steel 1m/min 3m/min 5m/min 10m/min 15m/min The chart above shows the processing range. JIS ④-119