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 E-SP Spiral Fluted Taps (for blind hole) ① JIS Spiral Fluted Taps for Soft Structural Steels Spiral Fluted Taps (for through hole) ② Specification Spiral Pointed Taps (for through hole) Oxide ③ Recommended Tapping Speeds depending on Materials Low carbon steels Medium carbon steels 低炭素鋼 中炭素鋼 5 10 〜 5 10〜 Hand Taps ( m / min ) ( m / min ) ④ Product Features ●The E-SP is suitable for tapping relatively soft work piece materials Cemented Carbide Taps ⑤ such as mild steel (SS41, S25C, etc.). ●It produces a good internal thread with an excellent surface finish. Tapping Data Thread Size [M6×1] Roll Taps ⑥ Workpiece Material SS400 E-SP Hole Shape Blind hole Can Continue Bored Hole Size φ5.0 Tapping Length 7mm Competitors SP Tapping Speed 8m/min Special Thread Taps Simple Inspection Tools 0 500 1,000 1,500 2,000 2,500 ⑦ Machinery Type Drilling machine (Number of holes processed) Cutting Fluid Non-water soluble cutting oil Pipe Taps ⑧ E-SP Competitors spiral flute tap Internal thread Internal thread Thread Mills Premium Thread Mills ⑨ Internal thread shape Internal thread shape Dies ⑩ Center Drills Centering Tools ⑪ JIS ①-127