Drill bit for metal Tvardy HSS DIN1869 long 6.0 x 260 mm

Long HSS drill bit for metal Tvardy with a 6.0 mm cutting diameter and a 260 mm overall length, manufactured to DIN1869. Designed for drilling steel and other metals, this high-speed steel bit offers increased heat resistance and wear performance compared with carbon steel bits. The extended length and straight shank make it suitable for deep holes and for reaching confined or recessed work areas in both handheld drills and stationary drill presses.

Advantages

The HSS material provides improved hardness and thermal stability during continuous drilling, reducing flank wear and preserving cutting geometry. The long 260 mm overall length permits deeper penetration without the need for extensions, while the 6.0 mm diameter balances rigidity and cutting capacity for common metalworking tasks. Conformance to DIN1869 ensures consistent flute geometry and shank dimensions for compatibility with standard drill chucks and holders.

Suitable for

• Drilling through mild and alloy steels
• Deep-hole drilling where reach is required
• Use in handheld electric drills and drill presses
• Metalworking prototypes and repair work

Key specifications

• Drill type: high-speed steel (HSS) twist drill
• Cutting diameter: 6.0 mm
• Overall length: 260 mm
• Standard conformity: DIN 1869 (geometry and dimensions)
• Shank style: straight shank for standard chucks
• Suitable materials: steel and other ferrous metals

How to use

Mark the drilling position and secure the workpiece firmly in a vice or clamping fixture. Select an appropriate cutting speed for the material and diameter, apply a suitable cutting fluid when drilling steel to reduce heat and improve chip evacuation, and start drilling with steady, moderate feed pressure. For deep holes, periodically withdraw the drill slightly to clear chips and allow coolant to reach the cutting edges. Inspect the bit for wear or chipping before critical operations and replace it when performance degrades.

Usage recommendations

Use lower spindle speeds and light to moderate feed rates when drilling hardened steels. Apply cutting oil for improved tool life and surface finish. Store the bit in a dry, protected holder to prevent corrosion and maintain tip geometry.