Centre Drills
Lalson is a trusted manufacturer and exporter of HSS Centre Drills in India, designed for accurate centering and starting of holes in metalworking applications. Made from premium High-Speed Steel (HSS), our centre drills offer excellent hardness, wear resistance, and durability. These tools are essential for preparing workpieces for turning between centers or for guiding twist drills to ensure precise drilling.
Available in a range of sizes and standards, Lalson HSS Centre Drills are ideal for use in both manual and CNC machines across various industries. We ensure superior quality and reliable performance in every piece we manufacture.
Product Specification
IS 6708 - 1977
| Pilot Drill | Body Diameter | Overall Length |
| 1.6 | 4.0 | 37.5 |
| 2.0 | 5.0 | 42.0 |
| 2.5 | 6.3 | 47.0 |
| 3.15 | 8.0 | 52.0 |
| 4.0 | 10.0 | 59.0 |
| 5.0 | 12.5 | 66.0 |
| 6.3 | 16.0 | 74.0 |
| 8.0 | 20.0 | 83.0 |
| 10.0 | 25.0 | 103.0 |
BS 328 - Part :2 : 1950
| B.S. No. | Pilot Drill | Body Diameter | Overall Length |
| 1 | 3/64 | 1/8 | 1.1/2 |
| 2 | 1/16 | 3/16 | 1.3/4 |
| 3 | 3/32 | 1/8 | 2 |
| 4 | 1/8 | 5/16 | 2.1/4 |
| 5 | 3/16 | 7/16 | 2.1/2 |
| 6 | 1/4 | 5/8 | 3 |
| 7 | 5/16 | 3/4 | 3.1/2 |
IS 6709 - 1977
| Pilot Drill | Body Diameter | Bell Diameter | Overall Length |
| 1.6 | 6.3 | 3.35 | 47.0 |
| 2.0 | 8.0 | 4.25 | 52.0 |
| 2.5 | 10.0 | 5.30 | 59.0 |
| 3.15 | 11.2 | 6.80 | 63.0 |
| 4 | 14.0 | 8.50 | 70.0 |
| 5 | 18.0 | 10.60 | 78.0 |
| 6.3 | 20.0 | 13.20 | 83.0 |
| 8 | 25.0 | 17.0 | 103.0 |
| 10 | 31.5 | 21.20 | 126.0 |