
① Spiral Fluted Tap Series for blind hole Overall length L Thread length ℓ Thread + Neck ℓn length Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS SU+SP Spiral Fluted Taps (for blind hole) ① JIS SU- SP Spiral Fluted Taps for Stainless Steels Spiral Fluted Taps (for through hole) ② Specification ・Product Name and Size. <2D SU+SP M2 〜 M6(coarse thread) 〜 M1.7, M2 〜 M6(fine thread), M8 〜 , SU−SP Spiral Pointed Taps (for through hole) Oxide all U, all W ③ Recommended Tapping Speeds depending on Materials Medium carbon steels High carbon steels Alloy steels Stainless steels 中炭素鋼 高炭素鋼 合金鋼 ステンレス鋼 〜 10 〜 10 〜 10 〜 10 Hand Taps ( m / min ) ( m / min ) ( m / min ) ( m / min ) ④ Product Features ●Ideal for blind hole machining in stainless steel, chromium steel, molybdenum steel. These materials have remarkably high work hardening properties. Cemented Carbide Taps ●The optimum design of the thread section reduces the processing burden on each flutes cutting ⑤ chamfer. ●Reduces cutting resistance and increases tool life. ●Chip discharge is stable and achieves a good surface finished. ●Improved strength and life expectancy is achieved. ●Use with either synchronous or asynchronous thread processing. Roll Taps ⑥ Tapping Data Tapping Conditions [M6×1] Workpiece Material SUS304 (90HRB) SU+SP Bored Hole Size φ5. 0 Can Continue Special Thread Taps Simple Inspection Tools Tapping length 9mm, blind hole ⑦ SU-SP Tapping Speed 8m/mi n Machinery Type Vertical machining center (perfect synchronous feed) 0 250 500 750 1,000 1,250 Tapping Fluid Non-water soluble cutting oil (chlorine-free) (Number of holes tapped) Pipe Taps Speed chart Change in tapping torque ⑧ 切削トルクの推移 (N-cm) Taps for blind hole tapping of stainless steel. 350 ♦ SU+SP SLOW Tapping Speed FAST ▲ SU - SP 5m/min 10m/min 15m/min 20m/min 30m/min Parfect synchronous feed territory Work Piece Material Work Piece Material 325 Thread Mills Premium Thread Mills Hard-to-machine Hard-to-machine ▲ ⑨ Stainless Steel ZEN-B Stainless Steel SUS316 etc. SUS316 etc. 300 ♦ ▲ Stainless steel Stainless steel Torque SUS304 SU2-SP SUS304 275 ▲ ♦ SU+SP ▲ SUS303 SU-SP SUS303 ♦ 250 Dies ♦ ⑩ 5m/min 10m/min 15m/min 20m/min 30m/min 225 ♦ Tapping speed range by tap series 200 ■ Notes Initial 250holes 500holes 750holes 1,000holes [Number of holes tapped] When tapping SS400 materials and soft steel materials with SU+SP, use a Center Drills Centering Tools ⑪ synchronized feed machine. If they are tapped with a non-synchronized feed drilling machine or the like, the internal thread may widen. JIS ①-97