Drill bit Art-Pol HSS cylindrical 4 mm for metal, model 53040

Art-Pol HSS cylindrical 4 mm drill bit, model 53040, is engineered for accurate metal drilling. Manufactured from high-speed steel (HSS), this 4 mm diameter bit delivers consistent cutting performance and resistance to wear in routine metalworking operations. It is suitable for use with handheld drills and drill presses to produce precise 4 mm holes in steel, iron and a range of ferrous and non-ferrous metals across workshop and industrial settings.

Advantages

The high-speed steel construction provides durability and thermal stability during continuous drilling, reducing premature dulling. The cylindrical shank ensures secure clamping in standard chucks and supports stable rotation for straight holes. The 4 mm diameter offers a common size for pilot holes and through-holes, allowing predictable fit for fasteners and components. The bit’s geometry is optimized for chip evacuation and reduced walking on metal surfaces.

Suitable for

• Drilling 4 mm holes in steel and iron sheets and plates
• Creating pilot holes for tapping or larger drill sizes
• General metal fabrication and repair work in workshops
• Use in handheld drills and drill presses for production or maintenance

Key specifications

• Material: High-speed steel (HSS)
• Diameter: 4 mm
• Shank type: Cylindrical
• Recommended materials: Ferrous and non-ferrous metals (steel, iron, aluminium, brass)
• Typical applications: Through-holes, pilot holes, metal fabrication

How to use

Secure the drill bit in a compatible chuck and verify the shank is tightly clamped. Mark the drilling point and, if required, use a center punch to prevent walking. Set an appropriate drilling speed for the metal being worked on—lower speeds for harder steels and higher speeds for softer metals like aluminium. Apply steady feed pressure, allow the bit to cut without forcing, and periodically withdraw the bit to clear chips. Use cutting fluid when drilling hardened or thick sections to reduce heat and extend tool life.

Usage recommendations

For best results, use a sharp bit and appropriate cutting lubricant for steel and hard alloys. Match drill speed and feed to the material hardness, and replace the bit when signs of excessive wear or chipping appear to maintain hole quality.