Drill bit for metal Tvardy HSS 8.00 mm — high-speed steel, black-gold finish

The Tvardy HSS 8.00 mm drill bit is a high-speed steel cutting tool engineered for drilling precise 8.00 mm holes in metal. It features a black-gold finish that enhances wear resistance and helps reduce friction during cutting. Intended for use with handheld drills and drill presses, this drill bit is suitable for general metalworking tasks including maintenance, fabrication, and workshop projects where consistent hole diameter and clean edges are required.

Advantages

The high-speed steel construction provides durability and heat resistance during continuous drilling operations. The black-gold coating increases surface hardness and reduces built-up material on the cutting lips, improving chip evacuation and extending tool life. Ground flutes and a standard point geometry deliver reliable centering and straight drilling, producing accurate 8.00 mm holes in a range of steels and non-ferrous metals.

Suitable for

• Drilling mild and medium carbon steels
• Working with non-ferrous metals such as aluminum, brass, and copper
• Maintenance tasks and repair work requiring precise 8.00 mm holes
• Metal fabrication and assembly operations in workshops

When it may not be suitable

This drill bit is not intended for drilling hardened steels, high-alloy tool steels, or materials with surface treatments that significantly increase hardness; such applications require carbide or specialized drills. It may also wear faster when used at incorrect speeds, without appropriate lubrication, or when excessive feed pressure is applied.

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 8.00 mm
• Finish: black-gold coated surface for improved wear resistance
• Intended material: steel and non-ferrous metals
• Compatible equipment: handheld drills and drill presses
• Point geometry: standard for general-purpose metal drilling

How to use

Secure the workpiece and mark the drilling point. Use a center punch if necessary to prevent walking. Install the drill bit in the chuck and tighten it firmly. Select an appropriate spindle speed for the material (lower speeds for harder steels, higher speeds for soft non-ferrous metals) and apply cutting fluid when drilling steels to reduce heat and improve chip flow. Use steady, moderate feed pressure and withdraw periodically to clear chips and avoid clogging. After use, clean the bit and store it dry to prevent corrosion.

What to consider before purchase

• Confirm that an 8.00 mm diameter meets your hole-size requirement
• Check compatibility with your drill chuck and required drilling speeds
• Consider material hardness of your workpieces and whether a carbide or specialty bit is needed
• Plan for appropriate cutting fluid and safe clamping methods for metal work

Usage recommendations

For best results, use the Tvardy HSS 8.00 mm drill bit at recommended speeds for the specific metal, employ cutting fluid when drilling ferrous materials, and ensure secure clamping of the workpiece. Periodic retraction to clear chips and avoiding excessive feed will extend tool life and maintain hole quality.