Drill bit for metal Tvardy HSS 20.00 mm – black-gold, ground shank

Tvardy HSS 20.00 mm metal drill bit with black-gold coating and ground shank is a solid high-speed steel cutting tool designed for drilling steel and various other metals. The 20.00 mm diameter and precisely ground shank ensure stable seating in chucks and minimize runout during operation. The black-gold surface finish provides additional wear resistance and reduces friction, supporting consistent cutting performance in workshop and industrial environments.

Advantages

The HSS material offers a balance of hardness and toughness suitable for metalworking applications. Precise cutting geometry and ground shank deliver improved concentricity and more accurate hole tolerances. The black-gold coating enhances durability and reduces heat buildup, which helps maintain cutting edge sharpness for longer cycles. Compatibility with handheld drills and drill presses makes the bit versatile for both field and bench work.

Suitable for

• Drilling holes in mild and low-alloy steels
• Metalworking tasks on drill presses and hand-held drills
• Fabrication, maintenance, and repair operations requiring 20.00 mm holes

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 20.00 mm
• Coating: black-gold surface finish for wear resistance
• Shank type: ground shank for improved concentricity
• Intended use: drilling steel and other metals

How to use

Select a drill or drill press compatible with a 20.00 mm bit and secure the Tvardy HSS bit firmly in the chuck or collet. Mark and center-punch the drilling location to reduce wandering. Use appropriate cutting speeds and feed rates for the metal being drilled; apply steady pressure and allow the bit to cut without forcing. For deeper holes, retract periodically to clear chips and reduce heat. When drilling harder materials, use cutting fluid to extend tool life and improve hole quality.

Usage recommendations

For best results, use coolant or cutting oil when drilling steel and maintain recommended speed ranges for HSS tooling. Inspect the ground shank and cutting edges before use to ensure secure clamping and correct geometry. Store the drill bit in a dry place to prevent corrosion of the coating.