Drill bit GRAPHITE 4 mm titanium-coated straight shank for metal (57H124)

Straight-shank GRAPHITE drill bit 4 mm with titanium coating is engineered for drilling metal with hand drills and drill presses. The 4 mm diameter provides a precise small hole for general metalworking tasks, maintenance and repair jobs. The titanium coating increases surface hardness and wear resistance compared to uncoated bits, helping to extend tool life when working with steel, cast iron and non-ferrous metals.

Advantages

The titanium-coated cutting edges improve heat resistance and reduce friction during drilling, which allows higher cutting speeds and more consistent hole quality. The straight shank ensures secure clamping in standard chucks and compatibility with a wide range of drilling machines. The 4 mm size offers accurate, repeatable holes for fittings, fasteners and pilot holes in metal components.

Suitable for

• Drilling holes in steel, cast iron and non-ferrous metals
• Workshop maintenance and repair tasks
• Pilot holes for tapping and fastening operations
• Use with hand drills and drill presses

Key specifications

• Diameter: 4 mm
• Shank type: straight shank for standard chucks
• Coating: titanium coating for increased hardness and wear resistance
• Material compatibility: steel, cast iron, non-ferrous metals
• Recommended use: metal drilling, pilot holes, maintenance and repair

How to use

Secure the drill bit in the chuck of a hand drill or drill press, ensuring the shank is inserted fully and tightened. Select an appropriate drilling speed for the metal being drilled; lower speeds for harder steels and higher speeds for softer non-ferrous metals. Use cutting fluid or lubricant to reduce heat and improve chip removal when drilling through metal. Apply steady, moderate pressure and withdraw the bit occasionally to clear chips and prevent clogging.

Usage recommendations

For best results, match drilling speed and feed to the workpiece material, maintain coolant or cutting fluid during prolonged use, and replace the bit when wear degrades hole quality. Always wear appropriate personal protective equipment and follow machine safety procedures.