
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 EH-HT G Spiral Fluted Taps (for blind hole) ① DIN Hand Taps for Parallel Pipe Threads, for Hard-to-Machine Materials Spiral Fluted Taps (for through hole) ② Specification ■E H-HT G is the hand tap suitable for hard steels of 35-45HRC, such as forgings and thermal refined steels of high carbon steels and Spiral Pointed Taps (for through hole) ③ alloy steels, and die steels. Recommended Tapping Speeds depending on Materials Thermal refined steels Tool steels 調質鋼 工具鋼 〜 5 〜 5 Hand Taps ( m / min ) ( m / min ) ④ 35〜45HRC TYPE:1 Cemented Carbide Taps ⑤ Segment:1H Roll Taps ⑥ L ℓ ℓs Ds K ℓk No. of Size Class Code Chamfer TYPE (mm) (mm) (mm) (mm) (mm) (mm) flutes For G Threads G 1/8-28 - TVG0020DCBC 2.5P 90 19 46 7 5.5 8 4 1 G 1/4-19 - TVG0040DCBC 2.5P 100 21 51 11 9 12 4 1 Special Thread Taps Simple Inspection Tools G 3/8-19 - TVG0060DCBC 2.5P 100 21 51 12 9 12 4 1 ⑦ G 1/2-14 - TVG0080DCBC 2.5P 125 24 64 16 12 15 4 1 Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ DIN ⑧-55 ※ This product is different from JIS products in shape and dimensions, please be careful when using.