Drill bit GRAPHITE HSS cylindrical 6.5 mm for metal, model 55H026

GRAPHITE HSS cylindrical drill bit 6.5 mm is designed for reliable metal drilling in workshop and maintenance environments. Made of high-speed steel (HSS), the 6.5 mm diameter bit offers good wear resistance and heat tolerance for repeated drilling operations in steel, cast iron and various non-ferrous metals. The cylindrical shank fits standard drill chucks and is compatible with both handheld and bench drills for general metalworking tasks.

Advantages

The HSS material delivers a balance of hardness and toughness that helps resist dulling under elevated temperatures encountered in metal drilling. Its cylindrical shank ensures secure clamping in standard chucks and straightforward changeover between tools. The 6.5 mm diameter provides a common size for pilot holes and component fabrication, while the geometry of the cutting edges is suitable for producing clean through-holes in a range of ferrous and non-ferrous materials.

Suitable for

• Drilling steel sheets and profiles
• Creating holes in cast iron components
• Working with aluminium and other non-ferrous metals
• Pilot holes for fastening and assembly
• Workshop maintenance and repair tasks

Key specifications

• Material: high-speed steel (HSS)
• Shank type: cylindrical shank for standard chucks
• Diameter: 6.5 mm
• Intended application: metal drilling (ferrous and non-ferrous)
• Compatible with: handheld and stationary drills

How to use

Secure the drill bit in the chuck so the shank is clamped firmly and concentrically. Select an appropriate rotational speed for the metal being drilled—lower speeds for harder steels and higher speeds for softer non-ferrous metals. Use cutting fluid or lubricant when drilling steel or cast iron to reduce heat build-up and extend tool life. Apply steady, even feed pressure; withdraw occasionally to clear chips when drilling deep holes. After use, clean chips and residue from the flutes and store the bit in a protective holder to avoid damage.

Usage recommendations

For best performance, match drilling speed and cutting lubricant to the workpiece material, keep the bit sharp and avoid excessive feed pressure. When drilling hardened steels or masonry, choose a tool specifically designed for those materials rather than a general HSS bit.