
Specification ■DurabilityisimprovedbypremiumpowderHSSandspecialcoating. ■Chipejectionefficiencyisimprovedandcutting
| Coating | <2D | resistanceisreducedbytheuniquecuttingedge | |
| shape,achievingagoodinternalthreadandlong | |||
| toollife. | |||
| Recommended Tapping Speeds depending on Materials |
| Low carbon steels | Medium carbon steels | High carbon steels | Alloy steels | Stainless steels | |
| 10低炭素鋼20 | 10中炭素鋼25 | 10高炭素鋼25 | 10合金鋼20 | 5ステンレス鋼10 | |
| (m/min) | (m/min) | ( m/ min) | (m/min) | (m/min) |
TYPE:1 TYPE:2 Coolant hole size Coolant hole size
Segment:1D
| Size | Class | Code | Chamfer | L (inch) �i� | ℓ (inch) �i� | ℓn (inch) �i� | ℓs (inch) | Ds (inch) | K (inch) | ℓk (inch) | No.�of flutes | Coolant�hole�size (inch) | �� TYPE |
| For�i� | �Unified� | �i�Threads | |||||||||||
| 5/16-18UNC | GH5 | 5201103071 | 2.5P | 3.543 | 0.472 | 1.378 | 1.831 | 0.318 | 0.238 | 0.375 | 3 | 0.039 | 1 |
| 3/8-16UNC | GH5 | 5201103082 | 2.5P | 3.937 | 0.512 | 1.535 | 2.028 | 0.381 | 0.286 | 0.437 | 3 | 0.059 | 1 |
| 1/2-13UNC | GH5 | 5201103111 | 2.5P | 4.331 | 0.591 | - | 2.205 | 0.367 | 0.275 | 0.437 | 3 | 0.079 | 2 |