Drill bit Tvardy HSS 6.10 mm for metal, black-gold coating

Tvardy HSS drill bit with a 6.10 mm diameter is designed for drilling metal. Constructed from high‑speed steel (HSS), this drill bit offers the rigidity and wear resistance required for cutting through steel, iron and other common metal alloys. A black‑gold coating reduces friction on the cutting edges and helps improve chip evacuation during continuous or intermittent drilling operations. The bit is suitable for use in hand drills and drill presses in workshop, maintenance and fabrication environments.

Advantages

The HSS material provides a balance of hardness and toughness that preserves cutting geometry under heat and load. The black‑gold surface treatment reduces adhesion of chips and lowers cutting resistance, which contributes to longer tool life and cleaner holes. The 6.10 mm diameter gives a precise through‑hole size for metalwork where accurate, repeatable results are required. The bit’s shank is compatible with standard drill chucks used in portable and stationary drilling equipment.

Suitable for

• Drilling holes in mild and medium‑hard steels
• Fabrication and metal workshop tasks
• Maintenance and repair work with hand drills or drill presses
• Creating pilot and through holes in metal assemblies

Key specifications

• Diameter: 6.10 mm
• Material: High‑speed steel (HSS)
• Coating: black‑gold anti‑friction surface
• Application: metal drilling
• Compatibility: standard drill chucks (hand drills and drill presses)

How to use

Clamp the workpiece securely and mark the drilling point. Fit the 6.10 mm HSS bit into a properly tightened drill chuck and set an appropriate drilling speed for the material being processed—use lower speeds for harder steels and higher speeds for softer metals. Apply steady, even feed pressure to avoid chatter and allow chips to evacuate from the flutes. Use cutting fluid or coolant when drilling thicker sections or harder alloys to reduce heat buildup and extend bit life. Withdraw the bit periodically to clear accumulated chips when performing deep holes.

Usage recommendations

For best results, pre‑drill with a smaller pilot hole when precise alignment is required or when drilling into thicker metal. Maintain appropriate cutting speed and lubrication to maximize tool life and hole quality. Inspect the bit for wear or damage before use and replace when cutting edges become rounded or chipped.