
〜 ■ N+RS/N-RS are the forming taps suitable for non-ferrous materials such as aluminum castings, aluminum diecasting and brass. Nitride Recommended Tapping Speeds depending on Materials ・Product symbol is distinguished depend on the size. N+RS 〜M6 (coarse thread)
| 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 | 〜M6 (fine threads), | |
| 5 15 | 5 15 | 5 15 | N−RS | |
| M7〜, all U, all STI | ||||
| (m/min) | (m/min) | ( m/ min) |