Drill bit GRAPHITE 57H123 titanium-coated metal, cylindrical shank 3.5 mm

GRAPHITE drill bit 57H123 is a 3.5 mm cylindrical-shank cutting tool with a titanium coating, designed for drilling metal. It is intended for use in handheld drills and drill presses and provides increased wear resistance and longer service life compared with uncoated bits. The geometry and coating make it suitable for light to medium-duty metalworking and maintenance tasks involving steel, cast iron and non-ferrous metals.

Advantages

The titanium coating reduces friction and improves heat resistance during cutting, which helps extend tool life and maintain hole accuracy. The cylindrical shank ensures reliable clamping in standard drill chucks, and the 3.5 mm diameter offers precise, small-diameter drilling for fittings, brackets and component assemblies. The bit’s material and surface finish provide consistent cutting performance across common workshop metals.

Suitable for

• Drilling holes in steel and cast iron for light-to-medium fabrication
• Making precise holes in non-ferrous metals such as aluminium and brass
• Maintenance, repair and assembly tasks with handheld drills or drill presses
• Creating pilot holes for screws or for subsequent reaming and tapping

Key specifications

• Cutting diameter: 3.5 mm
• Shank type: cylindrical (straight)
• Coating: titanium (wear- and heat-resistant surface treatment)
• Intended materials: steel, cast iron, non-ferrous metals
• Typical mounting: handheld drill or drill press chuck

How to use

Secure the drill bit in a clean, appropriate-sized chuck and set the drill or press to a speed suitable for the material being worked. Use cutting fluid when drilling steels and cast iron to reduce heat and improve chip evacuation. Apply steady, moderate feed pressure; avoid excessive force that can cause bit breakage or overheating. After use, clean chips from the flutes and store the bit in a dry place to preserve the coating.

Usage recommendations

For best results, select drill speeds in the medium-to-high range for aluminium and lower speeds for harder steels; always use appropriate coolant for steels and cast iron. Replace the bit when cutting performance declines or the coating shows excessive wear to maintain hole accuracy and safety.