Drill bit for metal Tvardy 8.0 x 240 mm HSS long DIN1869

Long high-speed steel (HSS) drill bit Tvardy 8.0 x 240 mm manufactured to DIN1869. This long flute bit is designed for drilling metal and similar materials, offering extended reach for deeper holes and improved chip evacuation compared with standard-length bits. The geometry and hardenable HSS material support reliable cutting performance in handheld drills and drill presses for workshop, construction and repair tasks.

Advantages

The long HSS construction provides consistent cutting edge retention and resistance to wear during through-holes and deep drilling operations. Extended flute length improves chip removal and reduces the risk of clogging when drilling into steel, iron and non-ferrous metals. The DIN1869-compliant dimensions ensure compatibility with standard drill chucks and predictable drilling depth control. The solid steel body and precision-ground flutes contribute to straight, accurate holes and stable drilling behavior.

Suitable for

• Drilling through steel plates and structural metal components
• Creating deeper holes where standard-length bits are insufficient
• Workshop and maintenance tasks with handheld drills or drill presses
• Repair and construction jobs involving iron, mild steel and many non-ferrous metals

Key specifications

• Material: high-speed steel (HSS)
• Size: 8.0 mm diameter
• Total length: 240 mm
• Flute type: long flute for extended reach and improved chip evacuation
• Standard: manufactured to DIN1869 dimensional and geometry guidelines
• Shank: straight shank suitable for standard chucks

How to use

Select an appropriate drill speed and clamping method for the 8.0 mm HSS bit before starting. Secure the workpiece and fit the straight shank into the drill chuck, ensuring it is tightened properly. For metal drilling, use cutting fluid or coolant to reduce heat, extend tool life and improve chip flow. Apply steady pressure without forcing the bit; retract periodically on deep holes to clear chips and maintain cutting efficiency. After use, clean chips from the flutes and store the bit dry to prevent corrosion.

Usage recommendations

Use medium to high spindle speeds appropriate for HSS in the material being drilled, and apply cutting fluid for better results and longer tool life. For deep holes, peck drilling (periodic retraction) is recommended to prevent chip build-up and reduce bit stress.