Graphite HSS Metal Drill Bit, 5.5 mm, DIN 338, 2 pieces

The Graphite HSS metal drill bit set includes two high-quality 5.5 mm bits engineered for precision and durability in metalworking tasks. Manufactured in accordance with the DIN 338 standard, these drill bits are crafted from high-speed steel, providing the necessary hardness and heat resistance for demanding drilling operations. The precision-ground geometry allows for accurate centering and efficient material removal, ensuring clean and professional results in every application.

Advantages

These drill bits offer exceptional performance due to their robust high-speed steel construction, which maintains sharpness even during prolonged use. The DIN 338 compliance guarantees standardized dimensions and high manufacturing quality, making them a reliable choice for both professional workshops and home improvement projects. Their design minimizes vibration and heat buildup, which helps in extending the service life of the tool while maintaining consistent drilling speed and hole quality.

Suitable for

• Drilling in steel and alloyed steel
• Working with cast iron
• Processing non-ferrous metals such as aluminum or copper
• General metalworking and DIY repair tasks

When it may not be suitable

These drill bits are specifically optimized for metal materials and may experience premature wear or poor performance if used on masonry, concrete, or extremely hard ceramic tiles. They are also not intended for use with wood or plastics where specialized geometry is required for optimal chip evacuation.

Key specifications

• Diameter: 5.5 mm
• Material: High-speed steel (HSS)
• Standard: DIN 338
• Quantity: 2 pieces per pack

How to use

To achieve the best results, secure your workpiece firmly in a vice or clamp to prevent movement during the drilling process. Start by marking the center point of the hole to ensure accuracy. Apply steady, moderate pressure while maintaining a consistent rotational speed suitable for the material being drilled. It is recommended to use a cutting oil or lubricant to reduce friction and heat, which will significantly improve the finish of the hole and prolong the life of the drill bit.

What to consider before purchase

• Verify that your drill chuck is compatible with a 5.5 mm cylindrical shank.
• Ensure the drill bit diameter matches your specific fastener or project requirements.
• Check the maximum rotational speed of your power tool to avoid overheating the bit.

Usage recommendations

Always wear appropriate eye protection and safety gear when operating power tools. Periodically inspect the drill bit for signs of dulling or damage and replace it if necessary to maintain drilling efficiency and safety.