Drill bit GRAPHITE HSS cylindrical for metal 2.5 mm

GRAPHITE HSS cylindrical drill bit with a 2.5 mm diameter is designed for drilling precision holes in steel and non-ferrous metals. Manufactured from high-speed steel (HSS), this drill bit offers a balance of wear resistance and cutting performance suitable for general metalworking tasks. Its cylindrical shank fits standard chucks on handheld drills and drill presses, enabling stable rotation and consistent hole quality in fabrication, repair and light engineering operations.

Advantages

The HSS material provides good hardness and heat resistance for machining metal at moderate speeds while maintaining edge retention. The cylindrical shank allows secure clamping in many common drill chucks and supports accurate concentricity. The 2.5 mm diameter is suitable for small-diameter drilling where precise, repeatable holes are required. The bit's construction reduces the need for frequent resharpening in typical usage scenarios.

Suitable for

• Drilling small-diameter holes in mild and alloy steels
• Working with non-ferrous metals such as aluminum and brass
• Precision drilling in maintenance, repair and fabrication tasks
• Use with handheld electric drills and drill presses

Key specifications

• Diameter: 2.5 mm
• Material: High-speed steel (HSS)
• Shank type: Cylindrical shank for standard chucks
• Intended materials: Steel and non-ferrous metals
• Typical applications: Metalworking, repair, light engineering

How to use

Secure the drill bit in the chuck, ensuring the shank is clamped firmly and the bit runs true. Select a suitable cutting speed for HSS when drilling metal—moderate speeds reduce heat buildup and prolong tool life. Use appropriate cutting fluid or coolant when drilling steel to improve chip evacuation and reduce friction. Apply steady, even pressure; avoid excessive feed that may cause breakage of the small-diameter bit. After use, clean chips from the flutes and store the bit in a protective case or holder to prevent damage.

Usage recommendations

For best results when drilling metals with a 2.5 mm HSS bit, start with a center punch to prevent walking, use a lubricating cutting fluid on ferrous materials, and reduce speed when approaching through-holes. Replace the bit if signs of significant wear or chipping appear to maintain hole quality and operator safety.