KWB HSS Twist Drill Bit 19 mm DIN 338

The KWB HSS twist drill bit is a professional-grade tool engineered for high-precision drilling in metal. With a diameter of 19 mm and manufactured in strict accordance with the DIN 338 standard, this drill bit features a robust roll-forged construction with a steam-hardened, blue-black finish. It is designed for right-hand rotation and incorporates a 118-degree tip angle, ensuring reliable performance and clean hole formation in demanding industrial and workshop environments.

Advantages

This drill bit offers exceptional durability and heat resistance due to its steam-hardened surface treatment, which significantly extends the tool's lifespan during intensive use. The precision-ground geometry allows for efficient chip removal and reduced friction, leading to smoother drilling operations. Its design is specifically optimized for stability, providing consistent results even when working with tougher materials, while the reduced shank allows for compatibility with standard power tools.

Suitable for

• Alloyed and mild steel
• Castings and iron materials
• Non-ferrous metals
• Hard plastics

When it may not be suitable

This drill bit is not intended for drilling into hardened steel, masonry, concrete, or ceramic tiles, as these materials require specialized carbide-tipped bits. It is also not suitable for use in high-speed impact drills without a proper chuck adapter.

Key specifications

• Diameter: 19 mm
• Standard: DIN 338
• Tip angle: 118 degrees
• Type: N (normal helix)
• Finish: Steam hardened, blue-black
• Shank type: Reduced shank for 13 mm chucks

How to use

To use the KWB HSS twist drill bit, ensure it is securely fastened into the chuck of your power drill. For diameters between 17 mm and 20 mm, such as this 19 mm bit, ensure your drill is equipped with a 13 mm capacity chuck. Mark the center point of the hole to be drilled and use a center punch to create a small indentation, which will prevent the bit from wandering. Apply steady, moderate pressure and maintain a lower rotational speed to prevent overheating and ensure a clean cut. Use a suitable cutting oil to improve performance and prolong the life of the drill bit when working with metal.

What to consider before purchase

• Verify that your drill chuck has a minimum capacity of 13 mm.
• Ensure the material being drilled is compatible with HSS (High-Speed Steel) tools.
• Consider the use of a drill stand for larger diameters to maintain vertical accuracy.

Usage recommendations

Always wear appropriate eye protection and safety gear when operating power tools. Regularly inspect the drill bit for signs of wear or dulling to maintain drilling efficiency and safety.