Drill bit MILWAUKEE WIERTŁO HSS-G CO 6.0 mm — HSS-G cobalt drill for metal

MILWAUKEE WIERTŁO HSS-G CO 6.0 mm is a high-speed steel drill bit with a cobalt alloy formulation designed specifically for drilling metal. The 6.0 mm diameter delivers accurate, repeatable holes in a range of ferrous materials including steel and stainless steel. This HSS-G cobalt drill bit is compatible with hand-held drills and drill presses and is intended for demanding workshop and industrial applications where increased hardness and heat resistance are required.

Advantages

The cobalt-enhanced HSS-G construction increases wear resistance and maintains cutting edge stability at elevated temperatures compared with standard high-speed steel bits. The 6.0 mm geometry provides consistent hole size and good chip evacuation for metalworking. The robust design reduces the frequency of bit replacement in continuous drilling tasks and supports reliable performance when drilling hardened or work-hardened steels.

Suitable for

• Drilling holes in mild steel, alloy steel and stainless steel
• Use with hand-held electric drills and bench drill presses
• Workshop maintenance, metal fabrication and industrial production
• Creating pilot holes for tapping and fastening operations

Key specifications

• Material: high-speed steel with cobalt alloy
• Diameter: 6.0 mm
• Tip type: standard 118°–135° style for metal drilling (geometry optimized for ferrous materials)
• Shank: straight cylindrical shank for standard chucks
• Suitable materials: steel, stainless steel and other ferrous metals

How to use

Secure the workpiece and select an appropriate drilling speed for the diameter and material being drilled. Fit the 6.0 mm drill bit into the drill chuck and ensure it is properly tightened. Apply steady pressure and allow the drill to cut without excessive force; use short pecking motions if drilling deep holes to improve chip removal. If drilling stainless steel or thick sections, use cutting fluid or coolant to reduce heat buildup and prolong bit life. After use, clear chips from the flutes and store the bit in a dry location.

Usage recommendations

For best results, match drill speed to material hardness: lower speeds for stainless and hardened steels, higher speeds for mild steel. Use light cutting fluid when drilling to preserve edge life and improve surface finish. Replace the bit once wear or chipping affects hole accuracy.