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 ① Spiral Fluted Tap Series for blind hole Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk JIS ① HDISP For Dry Tapping, Blind Hole Use. Spiral Fluted Taps for Steels ② Specification Coating <2D ③ Recommended Tapping Speeds depending on Materials Medium carbon steels High carbon steels Alloy steels 中炭素鋼 高炭素鋼 合金鋼 10〜20 10〜20 10〜20 ④ (m/min) (m/min) (m/min) Product Features ● Designed with a through center hole for coolant lubrication, mist lubrication or air blast applications in blind holes. ●The HDISP has a slow spiral flute, making it the optimum tap for blind hole tapping on horizontal and vertical machines in materials such as carbon steel and alloy steel. ⑤ Tapping Data Tapping Condistion [P4 M10×1.25] Work Piece Material S50C(18HRC) Bored Hole Shape Blind hole ⑥ Bored Hole Size φ8.8 HDISP Tapping Length 12mm Can Continue Tapping Speed 8m/min Conventional Machinery Type CNCtapping machine Product Cutting Fluid Dry (Without tapping fluid) 0 50 100 150 200 250 300 350 400 ⑦ Number of HolesProcessed380 (Number of holes processed) Speed chart Slow Tapping Speed Fast ⑧ Work Piece 5m/minMaterial 10m/min 15m/min 20m/min Work PieceFully synchronous feed areaMaterial Alloy SCM SCM Alloy Steel SCr HDISP SCr Steel ⑨ HighCarbonSteelS45C High※Dry tappingCarbonS45CSteel Medium S45C S45C Medium Carbon SP F-SP Carbon Steel S30C +SP S30C Steel ⑩ Low S25C S25C Low Carbon Carbon Steel SS400 SS400 Steel 5m/min 10m/min 15m/min 20m/min ⑪ Tapping range by material being cut. JIS ①-199