⑥ Roll Tap Series Overall length L Thread length ℓ Thread + Neck length ℓn Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk ANSI ANSI N-RS Spiral Fluted Taps (for blind hole) ① Roll Taps for Non-Ferrous Materials Spiral Fluted Taps (for through hole) ② Specification 〜 ■N-RS is the forming tap suitable for non-ferrous materials such as aluminum castings, aluminum die castings and brass. Spiral Pointed Taps (for through hole) Nitride ③ Recommended Tapping Speed depending on Materials Wrought aluminum Aluminum alloy castings Zinc alloy castings アルミ圧延材 アルミ合金鋳物 亜鉛合金鋳物 5 15〜 5 15 〜 5 15〜 Hand Taps ( m / min ) ( m / min ) ( m / min ) ④ Segment:1J Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe TYPE (inch) (inch) (inch) (inch) (inch) (inch) (inch) For Metric Threads Cemented Carbide Taps M3 × 0.5 D5 388513M 4P 2.205 0.433 0.736 1.339 0.141 0.11 0.187 4 2 ⑤ M3 × 0.5 D5 388512M 2P 2.205 0.433 0.736 1.339 0.141 0.11 0.187 4 2 M3.5 × 0.6 D6 388515M 4P 2.205 0.433 0.748 1.339 0.141 0.11 0.187 4 2 M3.5 × 0.6 D6 388514M 2P 2.205 0.433 0.748 1.339 0.141 0.11 0.187 4 2 M4 × 0.7 D6 388517M 4P 2.48 0.512 0.815 1.535 0.168 0.131 0.25 4 2 Roll Taps M4 × 0.7 ⑥ D6 388516M 2P 2.48 0.512 0.815 1.535 0.168 0.131 0.25 4 2 M5 × 0.8 D7 388519M 4P 2.756 0.551 0.984 1.654 0.194 0.152 0.25 4 2 M5 × 0.8 D7 388518M 2P 2.756 0.551 0.984 1.654 0.194 0.152 0.25 4 2 M6 × 1 D8 388521M 4P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 M6 × 1 D8 388520M 2P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 4 2 Special Thread Taps Simple Inspection Tools ⑦ M7 × 1 D9 388523M 4P 3.543 0.748 1.339 1.831 0.318 0.238 0.375 4 3 M7 × 1 D9 388522M 2P 3.543 0.748 1.339 1.831 0.318 0.238 0.375 4 3 M8 × 1.25 D9 388527M 4P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 M8 × 1.25 D9 388526M 2P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 Pipe Taps M8 × 1 D9 388525M 4P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 ⑧ M8 × 1 D9 388524M 2P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 M10 × 1.5 D10 388531M 4P 3.937 0.906 1.535 2.126 0.381 0.286 0.437 6 3 M10 × 1.5 D10 388530M 2P 3.937 0.906 1.535 2.126 0.381 0.286 0.437 6 3 M10 × 1.25 D9 388529M 4P 3.937 0.906 1.535 2.126 0.381 0.286 0.437 6 3 Thread Mills Premium Thread Mills M10 × 1.25 D9 388528M 2P 3.937 0.906 1.535 2.126 0.381 0.286 0.437 6 3 ⑨ M12 × 1.75 D11 388535M 4P 4.331 1.024 - 2.205 0.367 0.275 0.437 6 4 M12 × 1.75 D11 388534M 2P 4.331 1.024 - 2.205 0.367 0.275 0.437 6 4 M12 × 1.25 D9 388533M 4P 4.331 1.024 - 2.205 0.367 0.275 0.437 6 4 M12 × 1.25 D9 388532M 2P 4.331 1.024 - 2.205 0.367 0.275 0.437 6 4 Dies ⑩ For Unified Threads No.0-80UNF H2 388410M 2P 1.772 0.236 - 1.161 0.141 0.11 0.187 3 1 No.1-64UNC H2 388411M 2P 1.772 0.276 - 1.161 0.141 0.11 0.187 3 1 No.1-72UNF H2 388412M 2P 1.772 0.276 - 1.161 0.141 0.11 0.187 3 1 Center Drills Centering Tools No.2-56UNC H2 388413M 2P 1.772 0.314 - 1.161 0.141 0.11 0.187 4 1 ⑪ No.2-56UNC H3 388414M 2P 1.772 0.314 - 1.161 0.141 0.11 0.187 4 1 No.2-64UNF H2 388415M 2P 1.772 0.314 - 1.161 0.141 0.11 0.187 4 1 No.2-64UNF H3 388416M 2P 1.772 0.314 - 1.161 0.141 0.11 0.187 4 1 ANSI ⑥-31 ※ This product is different from JIS products in shape and dimensions, please be careful when using.