Drill bit Tvardy HSS M2 extended for metal 7.0 mm zwart-gold (model T02370)

Tvardy HSS M2 extended drill bit for metal, 7.0 mm diameter, is a high-speed steel cutting tool designed for drilling through a wide range of ferrous and non-ferrous metals. The extended length provides access to deeper holes while the black-and-gold finish indicates protective coating and wear-resistant treatment. It is intended for use with electric hand drills and drill presses in metalworking, maintenance and fabrication environments where consistent hole quality and tool life are important.

Advantages

The HSS M2 material delivers a balance of hardness and toughness suitable for general metal drilling. The extended length allows drilling deeper or harder-to-reach holes without changing to extension accessories. The black-and-gold finish reduces friction and offers some corrosion and wear resistance for longer usable life under normal working conditions. The 7.0 mm diameter is a common size for through-holes and preparatory work for tapping operations.

Suitable for

• Drilling through mild steel, stainless steel (thin sections), aluminum and other non-ferrous metals
• Maintenance and repair tasks on machinery and equipment
• Fabrication and assembly work requiring deeper holes
• Use with hand drills and drill presses

Key specifications

• Material: high-speed steel M2 (HSS)
• Diameter: 7.0 mm
• Shank type: straight cylindrical shank suitable for standard drill chucks
• Length: extended length for deeper drilling (long flute and overall length)
• Finish: black-and-gold coated surface for reduced friction and wear resistance
• Application: designed for metalworking use

How to use

Secure the drill bit in a compatible drill chuck ensuring concentric clamping, then set drill speed appropriate to the material being drilled (lower speeds for stainless steel, higher speeds for aluminum). Use steady feed pressure and avoid excessive side loading. Apply cutting fluid or coolant when drilling harder metals to reduce heat and prolong bit life. Clear chips frequently to prevent clogging, and allow the bit to cool between extended runs.

Usage recommendations

For best results, match drill speed and cutting fluid to the workpiece material, clamp the workpiece securely, and use a pilot hole for precise positioning when required. Inspect the bit for wear or damage before use and replace when cutting performance declines.