Black Oxide Forged HSS jobber length Twist Drill Bits
Advantages
1. Hardness and Durability: Forged HSS drill bits are known for their high hardness and durability, making them suitable for drilling into hard materials such as metal, wood, and plastic. The forging process enhances the strength of the drill bit, ensuring long-lasting performance.
2. Heat Resistance: Black oxide coating on HSS drill bits provides heat resistance, reducing the friction and heat generated during drilling. This helps to prevent the drill bit from overheating and prolongs its lifespan, even when drilling through tough materials.
3. Corrosion Resistance: The black oxide coating also provides a layer of corrosion resistance, protecting the drill bit from rust and corrosion. This is particularly advantageous when working with metal materials.
4. Improved Lubricity: The black oxide coating reduces friction and acts as a lubricant during drilling. This results in smoother cutting action, reduced heat buildup, and increased chip flow, which ultimately extends the life of the drill bit.
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Usage
1. Metal Drilling: Forged black oxide drills excel in drilling through various types of metals, including steel, aluminum, brass, and stainless steel. They are used for tasks such as creating holes for bolts, screws, or rivets, as well as for general metal fabrication and repair work.
2. Woodworking: These drills are also suitable for drilling holes in wood, making them ideal for woodworking projects. They can be used to create holes for dowels, screws, or other fasteners, as well as for general carpentry tasks.
3. Plastic and Composite Drilling: Forged black oxide drills can be used for drilling holes in plastic materials, such as PVC pipes or acrylic sheets. They are also effective for drilling through composite materials like fiberglass.
4. General DIY and Home Improvement: Forged black oxide drills are versatile tools for various DIY and home improvement projects. They can be used for tasks like hanging shelves, installing curtain rods, assembling furniture, and more.
| Diameter (mm) | Flute Length (mm) | Overall Length (mm) | Diameter (mm) | Flute Length (mm) | Overall Length (mm) | Diameter (mm) | Flute Length (mm) | Overall Length (mm) | Diameter (mm) | Flute Length (mm) | Overall Length (mm) |
| 0.5 | 6 | 22 | 4.8 | 52 | 86 | 9.5 | 81 | 125 | 15.0 | 114 | 169 |
| 1.0 | 12 | 34 | 5.0 | 52 | 86 | 10.0 | 87 | 133 | 15.5 | 120 | 178 |
| 1.5 | 20 | 43 | 5.2 | 52 | 86 | 10.5 | 87 | 133 | 16.0 | 120 | 178 |
| 2.0 | 24 | 49 | 5.5 | 57 | 93 | 11.0 | 94 | 142 | 16.5 | 125 | 184 |
| 2.5 | 30 | 57 | 6.0 | 57 | 93 | 11.5 | 94 | 142 | 17.0 | 125 | 184 |
| 3.0 | 33 | 61 | 6.5 | 63 | 101 | 12.0 | 101 | 151 | 17.5 | 130 | 191 |
| 3.2 | 36 | 65 | 7.0 | 69 | 109 | 12.5 | 01 | 151 | 18.0 | 130 | 191 |
| 3.5 | 39 | 70 | 7.5 | 69 | 109 | 13.0 | 101 | 151 | 18.5 | 135 | 198 |
| 4.0 | 43 | 75 | 8.0 | 75 | 117 | 13.5 | 108 | 160 | 19.0 | 135 | 198 |
| 4.2 | 43 | 75 | 8.5 | 75 | 117 | 14.0 | 108 | 160 | 19.5 | 140 | 205 |
| 4.5 | 47 | 80 | 9.0 | 81 | 125 | 14.5 | 114 | 169 | 20.0 | 140 | 205 |
