Drill bit Tvardy HSS for metal 3.80 mm, black-gold finish (MPN T02038)

Tvardy HSS metal drill bit, 3.80 mm diameter, features a black‑gold surface finish and is designed for drilling steel and a variety of other metals. Made from high‑speed steel (HSS), the bit provides a balance of hardness and toughness suitable for general metalworking tasks in maintenance, fabrication, and repair environments. The geometry and finish reduce friction and help extend usable life when used with appropriate speeds and cutting fluids.

Advantages

The HSS material offers good wear resistance and heat tolerance for standard drilling operations in steel and non‑ferrous metals. The black‑gold surface finish improves chip flow and reduces surface friction, which helps minimize heat buildup and prolongs tool life. Its 3.80 mm diameter provides precise hole sizing for applications that require close tolerances, and the bit is compatible with both handheld drills and drill presses for flexible use across workshops and job sites.

Suitable for

• Drilling holes in mild and medium carbon steel
• Drilling non‑ferrous metals such as aluminum and brass
• Maintenance, repair and overhaul (MRO) tasks
• Fabrication and assembly work in metal workshops

Key specifications

• Material: High‑speed steel (HSS)
• Diameter: 3.80 mm
• Surface finish: Black‑gold coating
• Suitable toolholders: Straight shank for standard drill chucks
• Recommended use: Metal drilling (steel, aluminum, brass)

How to use

Secure the drill bit in the chuck so that it is held straight and without runout. Select an appropriate rotational speed for the workpiece material and diameter; reduce speed for hardened steel and increase for softer non‑ferrous metals. Use steady feed pressure and avoid excessive side load. When drilling thicker sections or harder steels, use a cutting fluid or coolant to reduce heat and improve chip evacuation. After drilling, deburr the hole to achieve the required finish and dimensional accuracy.

Usage recommendations

For best performance, use cutting fluid when drilling steel and reduce speed when encountering hardened areas. Inspect the bit for wear or chipping before use and replace when the cutting edges are dulled to maintain hole quality and operator safety.