⑧ Pipe Tap Series Overall length L Thread length ℓ Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk DIN PH-SP G Spiral Fluted Taps (for blind hole) ① DIN Spiral Fluted Taps for Parallel Pipe Threads, for Hard-to-Machine Materials Spiral Fluted Taps (for through hole) ② Specification ■S uitable for hard steels of 27-38HRC, such as forgings and thermal refined steels of high carbon steels and alloy steels, and die steels. Spiral Pointed Taps (for through hole) Oxide ③ Recommended Tapping Speeds depending on Materials High carbon steels Alloy steels Thermal refined steels 高炭素鋼 合金鋼 調質鋼 27 〜 27 〜 〜 5 Hand Taps ( m / min ) ( m / min ) ( m / min ) ④ 25〜35HRC TYPE:1 Cemented Carbide Taps ⑤ Segment:1H Roll Taps ⑥ L ℓ ℓs Ds K ℓk No. of TYPE Size Class Code Chamfer (mm) (mm) (mm) (mm) (mm) (mm) flutes For G Threads G 1/8-28 - SVG0020EEX 3P 90 12 46 7 5.5 8 3 1 G 1/4-19 - SVG0040EEX 3P 100 14 51 11 9 12 4 1 Special Thread Taps Simple Inspection Tools G 3/8-19 - SVG0060EEX 3P 100 14 51 12 9 12 4 1 ⑦ G 1/2-14 - SVG0080EEX 3P 125 18 64 16 12 15 4 1 Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ DIN ⑧-63 ※ This product is different from JIS products in shape and dimensions, please be careful when using.