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 ① DIN LO-SP OX Spiral Fluted Taps (for blind hole) ① DIN Low Spiral Fluted Taps, Oxidized Spiral Fluted Taps (for through hole) ② Specification ■S piral flutes with low helix can break down chips and can eject them smoothly. Suitable for thermal refined high carbon steels and alloy tool Spiral Pointed Taps (for through hole) Oxide steels. Effective in horizontal tapping. ③ Recommended Tapping Speeds depending on Materials Medium carbon steels High carbon steels 中炭素鋼 高炭素鋼 5 10〜 5 10 〜 Hand Taps ( m / min ) ( m / min ) ④ TYPE:1 TYPE:2 Cemented Carbide Taps ⑤ TYPE:3 TYPE:4 Roll Taps ⑥ Special Thread Taps Simple Inspection Tools ⑦ TYPE:5 TYPE:6 Pipe Taps ⑧ Thread Mills Premium Thread Mills TYPE:7 TYPE:8 ⑨ Dies ⑩ Center Drills Centering Tools ⑪ DIN ※ This product is different from JIS products in shape and dimensions, please be careful when using. ①-146