Drill bit for metal Art-Pol HSS cylindrical 4 mm

Art-Pol HSS cylindrical drill bit, 4 mm diameter, designed for accurate drilling in metal. Made from high-speed steel (HSS), this 4 mm metal drill bit combines wear resistance and heat tolerance to maintain cutting performance during repetitive or demanding drilling tasks. It is suitable for use with hand drills and drill presses when working on steel, iron and other ferrous and non-ferrous metals, delivering precise round holes for fabrication, maintenance and repair operations.

Advantages

The HSS material offers improved hardness and thermal stability compared with carbon tool steels, helping the 4 mm drill bit resist softening at elevated temperatures and preserve a sharp cutting edge. The cylindrical shank provides secure clamping in standard chucks and reduced runout for better hole accuracy. This drill bit is produced to consistent diameter tolerance to ensure repeatable 4 mm hole sizes and reliable fit for fasteners or assembly tasks.

Suitable for

• Drilling 4 mm holes in steel and iron components
• Creating precise holes in aluminum and other non-ferrous metals
• Maintenance and repair work in workshops and industrial settings
• Metal fabrication, mounting brackets and assembly tasks

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 4 mm
• Shank type: cylindrical
• Intended use: drilling metal (ferrous and non-ferrous)
• Compatible tools: hand drills and drill presses

How to use

Select an appropriate drilling speed and apply steady feed pressure while keeping the drill aligned with the intended hole location. For best results in thicker or harder metals, use cutting lubricant to reduce heat and prolong tool life. Secure the workpiece with clamps or a vice to prevent movement and start drilling with a pilot mark or center punch to avoid slipping. After drilling, clear chips from the flutes and inspect the hole for burrs; deburr if necessary.

Usage recommendations

Use moderate speeds for steel and higher speeds for softer non-ferrous metals; always use cutting fluid when drilling hardened or thick sections. Replace the bit when wear or chipping affects hole accuracy or cutting efficiency.