Tin-Coated HSS Step Drill Bits with Straight Flute
FEATURES
Enhanced durability: The tin (titanium nitride) coating provides a layer of hardness and heat resistance to the drill bit. This coating increases the lifespan of the bit by reducing friction and wear, allowing it to drill through harder materials like stainless steel with ease.
Improved chip evacuation: The straight flute design allows for efficient chip evacuation, minimizing the risk of chip clogging and overheating. This ensures smooth and clean drilling operation, especially when working with softer materials like plastic or wood.
Reduced friction and heat buildup: The tin coating reduces friction between the drill bit and the workpiece, thereby decreasing heat buildup during drilling. This prevents the bit from overheating and extends its operating life.
Anti-corrosion properties: The tin coating adds corrosion resistance to the drill bit, preventing rust and corrosion from occurring. This ensures that the drill bit remains in good condition even when exposed to moisture or harsh working environments.
Clear markings and step sizes: HSS step drill bits typically have clear markings on the shank, indicating the different step sizes and hole diameters. This makes it easy to select the desired hole size and ensures accurate drilling results.
Versatile usage: HSS step drill bits with a tin coating and straight flute are suitable for a wide range of applications, including metalworking, woodworking, plastic fabrication, and more. They can be used in various drilling machines, including drill presses, handheld drills, or impact drivers.
| Metric Size Step Drill Bit | ||||
| Drilling Range(mm) | Number of Steps | Dla of Steps(mm) | Overall Length(mm) | Shank Dia(mm) |
| 3-12 | 5 | 3-6-8-10-12 | / | 6 |
| 3-12 | 10 | 3-4-5-6-7-8-9-10-11-12 | / | 6 |
| 3-14 | 12 | 3-4-5-6-7-8-9-10-11-12-13-14 | / | 6 |
| 3-14 | 1 | 3-14 | / | 6 |
| 4-12 | 5 | 4-6-8-10-12 | 65 | 6 |
| 4-12 | 9 | 4-5-6-7-8-9-10-11-12 | 65 | 6 |
| 4-20 | 9 | 4-6-8-10-12-14-16-18-20 | 75 | 8 |
| 4-22 | 10 | 4-6-8-10-12-14-16-18-20-22 | 80 | 10 |
| 4-30 | 14 | 4-6-8-10-12-14-16-18-20-22-2-26-28-30 | 100 | 10 |
| 4-39 | 13 | 4-6-12-15-18-21-24-27-30-33-36-39 | 107 | 10 |
| 5-13 | 5 | 5-7-9-11-13 | 65 | 6.35 |
| 5-20 | 1 | 5-20 | / | / |
| 5-25 | 11 | 5-7-9-11-13-15-17-19-21-23-25 | / | / |
| 5-25 | 11 | 5-7-9-11-13-15-17-19-21-23-25 | 82 | 9.5 |
| 5-35 | 13 | 5-13-15-17-19-21-23-25-27-29-31-33-35 | 82 | 12.7 |
| 6-18 | 7 | 6-8-10-12-14-16-18 | / | 10 |
| 6-20 | 8 | 6-8-10-12-14-16-18-20 | 71 | 9 |
| 6-25 | 7 | 6-9-12-16-20-22.5-25 | 65 | 10 |
| 6-30 | 13 | 6-8-10-12-14-16-18-20-22-24-26-28-30 | 100 | 10 |
| 6-32 | 9 | 6-9-12-16-20-22.5-25-28.5-32 | 76 | 10 |
| 6-35 | 13 | 6-8-10-13-16-18-20-22-25-28-30-32-35 | / | 10 |
| 6-36 | 11 | 6-9-12-15-18-21-24-27-30-33-36 | 85 | 10 |
| 6-38 | 12 | 6-9-13-16-19-21-23-26-29-32-35-38 | 100 | 10 |
| 6-40 | 16 | 6-11-17-23-29-30-31-32-33-34-35-36-37-38- 39-40 |
105 | 13 |
| 8-20 | 7 | 8-10-12-14-16-18-20 | / | / |
