Twist Drill Bit Tvardy HSS M2 5.0 mm — extended length, black-gold finish

Tvardy HSS M2 5.0 mm twist drill bit with extended length and a black-gold finish is designed for metalworking tasks that require deeper hole drilling. Manufactured from high-speed steel (HSS M2), the bit combines material hardness and heat resistance appropriate for repeated drilling of steel and other ferrous and non-ferrous metals. The extended flute length enables drilling beyond standard depths while the black-gold surface finish provides additional wear resistance and reduced friction in many workshop and industrial applications. The bit is compatible with standard drill chucks and handheld or bench-mounted drilling machines.

Advantages

The HSS M2 construction offers high hardness and thermal stability under cutting loads, making the 5.0 mm bit suitable for continuous metal drilling. The extended length allows access to deeper workpieces without changing tooling, reducing setup time for through-holes or deep blind holes. The black-gold surface finish helps to lower friction, resist corrosion and improve chip evacuation compared with plain finishes, which can extend tool life and maintain hole quality. The geometry of the twist flutes supports reliable centring and consistent chip removal during drilling.

Suitable for

• Drilling steel, stainless steel and cast iron
• Drilling non-ferrous metals such as aluminum and brass
• Workshop and industrial drilling with handheld and bench drills
• Creating deeper holes and through-holes where standard-length bits are insufficient

Key specifications

• Material: high-speed steel (HSS M2)
• Nominal diameter: 5.0 mm
• Length type: extended flute length for deeper drilling
• Surface finish: black-gold coating for reduced friction and increased wear resistance
• Flute type: twist flutes for efficient chip evacuation

How to use

Secure the drill bit in a compatible drill chuck and ensure the workpiece is properly clamped. Select an appropriate cutting speed and feed for the material being drilled — lower speeds for hard steels and higher speeds for softer non-ferrous metals. Use cutting fluid or coolant when drilling steel or other hard materials to reduce heat and prolong tool life. Begin drilling at a controlled feed rate and avoid excessive side loads; periodically withdraw the bit to clear chips when drilling deep holes. After use, clean the bit and store it in a protective holder to prevent damage to the cutting edges.

Usage recommendations

For best results when drilling hard steels, use moderate speeds with continuous lubrication. When producing long, deep holes, peck drilling (intermittent withdrawal) helps prevent chip packing and reduces heat build-up. Inspect the cutting edges regularly and replace the bit if wear or chipping degrades hole quality.