
① Spiral Fluted Tap Series for blind hole Overall length L Chamfer+ full thread ℓt Thread length ℓ Thread + Neck ℓn length Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS F-SP Spiral Fluted Taps (for blind hole) ① JIS Spiral Fluted Taps for High Speed Tapping Spiral Fluted Taps (for through hole) ② Specification Coating Spiral Pointed Taps (for through hole) ③ Recommended Tapping Speeds depending on Materials Low carbon steels Medium carbon steels 低炭素鋼 中炭素鋼 15 25 15 25 〜 〜 Hand Taps ( m / min ) ( m / min ) ④ Product Features ●High speed machining is possible with a machine equipped with a fully synchronous feed mechanism. ●The F-SP exhibits excellent chip ejection properties from its unique flute shape and short thread length. ●At low speed, the shape and ejection of the chips can deteriorate, causing problems. Cemented Carbide Taps ⑤ Tapping Data Tapping Conditions [M6×1] Roll Taps Work Piece Material S50C ⑥ Bored Hole Shape Blind hole Tapping Length 1.5D ~ Machinery Type M/C Tapping Direction Vertical F-SP Special Thread Taps Feed Synchronous Simple Inspection Tools Can Continue ⑦ Tapping Speed 20m/mim General PurposeSP Cutting Fluid Water soluble cutting fluid Pilot hole 0 500 1,000 1,500 2,000 2,500 Drill Processing Method (Number of holes Processed) Number of Holes 2,000 Pipe Taps Processed ⑧ Speed chart Slow Tapping Speed Fast Thread Mills Premium Thread Mills 5m/min 10m/min 15m/min 20m/min 30m/min 50m/min ⑨ Work Piece Work Piece Material Fully synchronous feed area Material Alloy SCM SCM Alloy Steel SCr SCr Steel Dies High High ⑩ Carbon Carbon Steel S45C S45C Steel HFISP Medium S45C +SP F-SP HFIHS S45C Medium Carbon SP Carbon Steel S30C S30C Steel S25C S25C Center Drills Centering Tools Low Low ⑪ Carbon Carbon Steel Steel SS400 SS400 5m/min 10m/min 15m/min 20m/min 30m/min 50m/min Speed range by material being cut. JIS ①-175