Drill bit Bosch METALBOR HSS-TiN 3.0 mm – HSS-TiN metal drill

Bosch METALBOR HSS-TiN 3.0 mm is a high-speed steel drill bit with a titanium nitride (TiN) coating designed specifically for drilling metal. The 3.0 mm diameter gives accurate, clean holes in steel, cast iron and non-ferrous metals. The TiN coating reduces friction and increases surface hardness, providing better wear resistance and longer service life than uncoated HSS bits. The bit is intended for use with standard handheld drills and drill presses for general metalworking tasks.

Advantages

The TiN coating improves cutting performance by reducing heat build-up and adhesion of swarf, which helps maintain edge sharpness and dimensional accuracy. The HSS base material offers toughness and resistance to chipping during intermittent drilling. The compact 3.0 mm size enables precise pilot holes and detailed work in sheet metal and small components. Compatibility with common drill chucks makes the bit practical for a wide range of workshop and on-site applications.

Suitable for (tasks / use cases)

• Drilling precise pilot holes in steel and cast iron
• Creating holes in non-ferrous metals such as aluminium and brass
• Workshop assembly and repair work requiring small-diameter holes
• Use with handheld drills and benchtop drill presses for light to medium duty metalworking

Key specifications

• Material: High-speed steel (HSS) with titanium nitride (TiN) coating
• Diameter: 3.0 mm
• Intended application: Metal drilling (steel, cast iron, non-ferrous metals)
• Compatibility: Standard drill chucks and drill presses
• Design feature: Coated surface for reduced friction and increased wear resistance

How to use

Secure the drill bit in a compatible chuck, ensuring correct centring and tight clamping. Select an appropriate spindle speed for the metal being drilled — moderate to high speeds for non-ferrous metals, lower speeds for hard steels and cast iron. Use cutting fluid or lubricant when drilling ferrous metals to reduce heat and extend tool life. Apply steady, even pressure and clear chips frequently to avoid clogging and overheating. After use, clean the bit and store it in a protective case or holder to preserve the TiN coating.

Usage recommendations

For best results, match drill speed and feed to the workpiece material, employ cutting fluid for ferrous materials, and avoid excessive axial force that can cause bit breakage. Replace the bit once wear compromises hole accuracy or cutting efficiency.