
■ N+RZ/N-RZ are the forming taps suitable for ferrous E materials such as carbon steels, alloy steels, and normal steels. Oxide
| ~M2.6 | N+RZ | ~M6 (coarse thread) | |
| Recommended Tapping Speeds depending on Materials | |||
| N-RZ | ~M6 (fine thread), M7~ | ||
| ow carbon steels | Medium carbon steels | ||
| 5 15 | 5 15 | TYPE:1 |
For icon explanation, refer to P.50
Number of oil grooves : Metric thread : M2.6 and smaller=non, M3~M7=4, M8=3, M10 and larger=4 For M6 and smaller, external centers of 2 thread chamfer taps are removed.