Drill bit for metal Tvardy HSS 4.10 mm — straight shank, high-speed steel

Tvardy HSS drill bit 4.10 mm is a high-speed steel cutting tool intended for creating precise round holes in metal materials. The drill features a straight shank design compatible with standard three-jaw chucks and many drill presses, and it has a black-and-gold surface finish that indicates heat-treated HSS material and corrosion-resistant coating. This single-flute geometry and hardened cutting edges are optimized for general-purpose metalworking in steel, non-ferrous metals and common alloys.

Advantages

The HSS composition provides a balance of hardness and toughness for sustained cutting performance at moderate speeds, while the straight shank allows stable clamping in handheld and benchtop drilling machines. The 4.10 mm diameter is suitable for precision holes and pilot drilling, and the applied finish helps to reduce friction and extend tool life during continuous operation. The product is available in multiple pack sizes to match the needs of individual users, workshops or larger production runs.

Suitable for

• Drilling holes in mild and medium-hard steels
• Piercing non-ferrous metals such as aluminum, brass and copper
• Creating pilot holes for tapping or larger drill stages
• Use in handheld drills, drill presses and drilling machines with straight chucks

Key specifications

• Diameter: 4.10 mm
• Material: high-speed steel (HSS)
• Shank type: straight shank
• Finish: black-and-gold coated surface
• Recommended use: metal drilling (steel, non-ferrous metals, alloys)

How to use

Secure the drill bit in a suitable straight-shank chuck and ensure it is clamped firmly to prevent slippage. Select appropriate spindle speed and feed rate for the workpiece material; use lower speeds for harder steels and higher speeds for softer non-ferrous metals. Apply cutting fluid or lubricant when drilling steel to reduce heat and improve chip evacuation. Begin drilling with light pressure to establish a centered hole, then increase feed consistently until the hole is complete. Clear chips regularly and check the bit for wear to maintain hole accuracy.

Usage recommendations

For longest service life, use recommended cutting fluids, avoid excessive side loading, and replace the drill bit when cutting edges become dull or produce oversized holes. Store bits in a dry, organized container to prevent corrosion and damage to the cutting tip.