Baildon Metal Drill Bit DIN 338 RN NWKa 4.4 mm HSS

The Baildon metal drill bit, model DIN 338 RN NWKa with a 4.4 mm diameter, is a high-quality cutting tool engineered for precision and reliability in metalworking. Manufactured from durable high-speed steel (HSS), this drill bit is designed to meet the rigorous DIN 338 standards, making it a dependable choice for both professional workshops and demanding DIY projects. Its geometry is optimized for efficient material penetration and consistent performance across various metal types.

Advantages

This drill bit offers exceptional durability due to its high-speed steel construction, which maintains hardness even under elevated temperatures during drilling. The precision-ground tip ensures accurate centering and reduces walking on the workpiece surface. Furthermore, the flute design facilitates effective chip evacuation, preventing clogging and ensuring a smooth drilling process that extends the tool's lifespan and maintains hole quality.

Suitable for

• Drilling holes in structural steel and iron
• General metalworking and workshop maintenance
• Precision drilling in non-ferrous metals
• Creating pilot holes for larger fasteners

When it may not be suitable

This drill bit is not intended for drilling in hardened or tempered steels, as the material hardness may exceed the capabilities of standard HSS. It is also not recommended for use on masonry, concrete, or ceramic materials, which require specialized drill bits with carbide tips.

Key specifications

• Diameter: 4.4 mm
• Material: High-speed steel (HSS)
• Standard: DIN 338
• Type: RN NWKa

How to use

To achieve the best results, ensure the drill bit is securely fastened in the chuck of your power drill or drill press. Mark the drilling location with a center punch to prevent the bit from sliding. Apply steady, moderate pressure and maintain a consistent drilling speed appropriate for the material being worked. Using a suitable cutting oil can significantly improve the finish and prolong the life of the drill bit, especially when working with harder metals.

What to consider before purchase

• Verify the chuck capacity of your drill to ensure it accommodates the shank size.
• Ensure the 4.4 mm diameter matches your specific hole requirements.
• Check if your project material is compatible with standard high-speed steel.

Usage recommendations

Always wear appropriate eye protection when drilling metal. Ensure the workpiece is firmly clamped to prevent movement during the operation. If the drill bit becomes hot, allow it to cool down before handling.