JIS EH-HT

Hand Taps for Hard-to-Machine Materials

Specification

Recommended Tapping Speeds depending on Materials

Thermal refined steelsTool steels
調質鋼5工具鋼5
(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.
  • Tool 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 UsedEH-HT M6×1 5P
Workpiece MaterialSCM440/GearEH-HT
Bored Holeφ5Can Continue
Tapping Length10mm through hole
Tapping Speed9m/minHT
Machinery TypeCNC vertical machining center (asynchronous)0 100200 300400600 500
Holder TypeWith tension compression l(Number of holestapped)
Tapping FluidInsoluble cutting fluid
Holes Tapped500 holes (can continue tapping)

Product System Table

Slow Tapping Speed Fast

1m/min3m/min5m/min10m/min15m/min
Work piece MaterialWork piece Material
60HRC60HRC
UH-CT
Please use UH-CT and
High55HRC55HRCHigh
EH-CT with machine with
Hardness55HRC55HRCHardness
perfect synchronous feed.
MaterialsEH-CTMaterials
45HRC45HRC
45HRC45HRC
TemperedTempered
Material25HRCEH-HT25HRCMaterial
Tool &SKS・SKDSKS・SKDTool &
AlloyEH-PO ・・ Alloy
SCMSCrSCMSCr
SteelHC+SPSteel
HighHC-SPHigh
CarbonHC+POCarbon
SteelS45CS45CSteel
HC-PO
MediumS45CS45CMedium
CarbonCarbon
SteelS30CS30CSteel

1m/min 3m/min 5m/min 10m/min 15m/min

The chart above shows the processing range.