![[NACHI] — COSD4.7 Cobalt Drill](https://img.prosourcemro.com/2026/05/1200911-1.jpg)
Drills & Drill Sets
NACHI
[NACHI] — COSD4.7 Cobalt Drill
Family ID: 319-1385
NACHI COSD4.7 Cobalt Drill is a high-speed cobalt steel drill bit designed for precise hole-making in tough materials, sourced direct from Korea. Cobalt drills are commonly used in metalworking applications where standard HSS bits fall short, making them a practical choice for drilling hardened steels, stainless steel, and heat-resistant alloys in fabrication and manufacturing environments. Request a quote today for export-ready supply, competitive pricing, and reliable fulfillment through a KITA-registered Korean exporter.
42 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| 319-1385 | COSD4.7 | NACHI | 4.7MM | Spec: 4.7 | Cutting Length: 41 | Overall Length: 89 | ||
| 319-1394 | COSD4.8 | NACHI | 4.8MM | Spec: 4.8 | Cutting Length: 41 | Overall Length: 89 | ||
| 319-1400 | COSD4.9 | NACHI | 4.9MM | Spec: 4.9 | Cutting Length: 43 | Overall Length: 92 | ||
| 319-1419 | COSD5 | NACHI | 5.0MM | Spec: 5.0 | Cutting Length: 43 | Overall Length: 92 | ||
| 319-1428 | COSD5.1 | NACHI | 5.1MM | Spec: 5.1 | Cutting Length: 43 | Overall Length: 92 | ||
| 319-1437 | COSD5.2 | NACHI | 5.2MM | Spec: 5.2 | Cutting Length: 45 | Overall Length: 95 | ||
| 319-1446 | COSD5.3 | NACHI | 5.3MM | Spec: 5.3 | Cutting Length: 45 | Overall Length: 95 | ||
| 319-1455 | COSD5.4 | NACHI | 5.4MM | Spec: 5.4 | Cutting Length: 45 | Overall Length: 95 | ||
| 319-1464 | COSD5.5 | NACHI | 5.5MM | Spec: 5.5 | Cutting Length: 45 | Overall Length: 95 | ||
| 319-1473 | COSD5.6 | NACHI | 5.6MM | Spec: 5.6 | Cutting Length: 47 | Overall Length: 98 | ||
| 319-1482 | COSD5.7 | NACHI | 5.7MM | Spec: 5.7 | Cutting Length: 47 | Overall Length: 98 | ||
| 319-1491 | COSD5.8 | NACHI | 5.8MM | Spec: 5.8 | Cutting Length: 47 | Overall Length: 98 | ||
| 319-1507 | COSD5.9 | NACHI | 5.9MM | Spec: 5.9 | Cutting Length: 47 | Overall Length: 98 | ||
| 319-1516 | COSD6 | NACHI | 6.0MM | Spec: 6.0 | Cutting Length: 49 | Overall Length: 102 | ||
| 319-1525 | COSD6.1 | NACHI | 6.1MM | Spec: 6.1 | Cutting Length: 49 | Overall Length: 102 | ||
| 319-1534 | COSD6.2 | NACHI | 6.2MM | Spec: 6.2 | Cutting Length: 49 | Overall Length: 102 | ||
| 319-1543 | COSD6.3 | NACHI | 6.3MM | Spec: 6.3 | Cutting Length: 49 | Overall Length: 102 | ||
| 319-1552 | COSD6.4 | NACHI | 6.4MM | Spec: 6.4 | Cutting Length: 51 | Overall Length: 105 | ||
| 319-1561 | COSD6.5 | NACHI | 6.5MM | Spec: 6.5 | Cutting Length: 51 | Overall Length: 105 | ||
| 319-1570 | COSD6.6 | NACHI | 6.6MM | Spec: 6.6 | Cutting Length: 51 | Overall Length: 105 | ||
| 319-1589 | COSD6.7 | NACHI | 6.7MM | Spec: 6.7 | Cutting Length: 51 | Overall Length: 105 | ||
| 319-1598 | COSD6.8 | NACHI | 6.8MM | Spec: 6.8 | Cutting Length: 51 | Overall Length: 105 | ||
| 319-1604 | COSD6.9 | NACHI | 6.9MM | Spec: 6.9 | Cutting Length: 51 | Overall Length: 105 | ||
| 319-1613 | COSD7 | NACHI | 7.0MM | Spec: 7.0 | Cutting Length: 51 | Overall Length: 105 | ||
| 319-1622 | COSD7.1 | NACHI | 7.1MM | Spec: 7.1 | Cutting Length: 53 | Overall Length: 108 | ||
| 319-1631 | COSD7.2 | NACHI | 7.2MM | Spec: 7.2 | Cutting Length: 53 | Overall Length: 108 | ||
| 319-1640 | COSD7.3 | NACHI | 7.3MM | Spec: 7.3 | Cutting Length: 53 | Overall Length: 108 | ||
| 319-1659 | COSD7.4 | NACHI | 7.4MM | Spec: 7.4 | Cutting Length: 55 | Overall Length: 111 | ||
| 319-1668 | COSD7.5 | NACHI | 7.5MM | Spec: 7.5 | Cutting Length: 55 | Overall Length: 111 | ||
| 319-1677 | COSD7.6 | NACHI | 7.6MM | Spec: 7.6 | Cutting Length: 55 | Overall Length: 111 | ||
| 319-1686 | COSD7.7 | NACHI | 7.7MM | Spec: 7.7 | Cutting Length: 57 | Overall Length: 114 | ||
| 319-1695 | COSD7.8 | NACHI | 7.8MM | Spec: 7.8 | Cutting Length: 57 | Overall Length: 114 | ||
| 319-1701 | COSD7.9 | NACHI | 7.9MM | Spec: 7.9 | Cutting Length: 57 | Overall Length: 114 | ||
| 319-1710 | COSD8 | NACHI | 8.0MM | Spec: 8.0 | Cutting Length: 57 | Overall Length: 114 | ||
| 319-1729 | COSD8.1 | NACHI | 8.1MM | Spec: 8.1 | Cutting Length: 59 | Overall Length: 117 | ||
| 319-1738 | COSD8.2 | NACHI | 8.2MM | Spec: 8.2 | Cutting Length: 59 | Overall Length: 117 | ||
| 319-1747 | COSD8.3 | NACHI | 8.3MM | Spec: 8.3 | Cutting Length: 59 | Overall Length: 117 | ||
| 319-1756 | COSD8.4 | NACHI | 8.4MM | Spec: 8.4 | Cutting Length: 61 | Overall Length: 121 | ||
| 319-1765 | COSD8.5 | NACHI | 8.5MM | Spec: 8.5 | Cutting Length: 61 | Overall Length: 121 | ||
| 319-1774 | COSD8.6 | NACHI | 8.6MM | Spec: 8.6 | Cutting Length: 61 | Overall Length: 121 | ||
| 319-1783 | COSD8.7 | NACHI | 8.7MM | Spec: 8.7 | Cutting Length: 61 | Overall Length: 121 | ||
| 319-1792 | COSD8.8 | NACHI | 8.8MM | Spec: 8.8 | Cutting Length: 63 | Overall Length: 124 |
